アルミニウム合金の拡散接合における希土類元素添加の影響

(1)

Muroran Institute of Technology

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Title

アルミニウム合金の拡散接合における希土類元素添加の

_影響

Author(s)

田湯, 善章

Citation

室蘭工業大学紀要 Vol.63, pp.45-48, 2014

Issue Date

2014-03-18

URL

http://hdl.handle.net/10258/2830

Rights

(2)

－　45　－㛗⯪ ᗣ⿱㸪⏣‮ၿ❶㸪᱈㔝ṇ

- 44 -

ࢆ♧ࡍ㸬㟁☢᧠ᢾ࡞ࡋ㸦$㸧࡛ࡣᰕ≧ࢹࣥࢻࣛ࢖ ࢺ⤌⧊ࡀⓎ㐩ࡋ࡚࠸ࡓ㸬୍᪉㸪㟁☢᧠ᢾࡋࡓࡶࡢ ࡛ࡣ༳ຍ㟁ὶࡢቑ኱࡟కࡗ࡚᪉ྥᛶࡢ࡞࠸ᚤ⣽࡞ ➼㍈ࢹࣥࢻࣛ࢖ࢺ⤌⧊࡟ኚ໬ࡋ࡚࠸ࡓ㸬ࡲࡓ㸪༳ ຍ☢ሙࡀ኱ࡁࡃ࡞ࡿ࡯࡝ᚤ⣽໬ࡀಁ㐍ࡉࢀࡓ㸬 ᾮ┦ࡀᏑᅾࡍࡿ Υ࡛᧠ᢾ೵Ṇ ඹᬗ ᗘ௨ୗࡲ࡛᧠ᢾ ᅗ 㟁☢᧠ᢾ ᗘ⠊ᅖ࡜࣐ࢡࣟ⤌⧊ࡢ㛵ಀ 㹫7$ ᅗ ༳ຍ㟁ὶ࡜࣐ࢡࣟ⤌⧊ࡢ㛵ಀ ᅗ ࣑ࢡࣟ⤌⧊࡟ཬࡰࡍ 6U ࡜㟁☢᧠ᢾࡢᙳ㡪 ࣑ࢡࣟ⤌⧊࡟ཬࡰࡍ 6U ῧຍࡢᙳ㡪ࢆᅗ ࡟♧ࡍ㸬㟁☢᧠ᢾࡢ᭷↓࡟࠿࠿ࢃࡽࡎ㸪6U ࡢῧຍ࡟ࡼࡾᚤ ⣽໬ࡋࡓ㸬ࡲࡓ㸪6U ࢆྵ᭷ࡋ㟁☢᧠ᢾࡋࡓࡶࡢ࡛ ࡣඹᬗจᅛ⤌⧊ࡀᚤ⣽໬ࡋ࡚࠸ࡓ㸬6U ࡣඹᬗࢩࣜ ࢥࣥ⤖ᬗࡢ᰾⏕ᡂࡢಁ㐍࡜ඹᬗࢩࣜࢥࣥ⤖ᬗ⢏ࡢ ᡂ㛗ࢆᢚไࡍࡿ㸬ࡇࡢࡇ࡜࠿ࡽ 6U ࡢῧຍ࡟ࡼࡗ࡚ ඹᬗࢩࣜࢥࣥࡢᚤ⣽໬ࡋ㸪ࡉࡽ࡟㟁☢᧠ᢾ࡛ࡢᚤ ⣽໬ࢆಁ㐍ࡍࡿ࡜⪃࠼ࡽࢀࡿ㸬 ࡲ࡜ࡵ _{$OPDVV6L ྜ㔠ࡢ⁐‮ࢆඹᬗ ᗘ௨ୗࡲ} ࡛㟁☢᧠ᢾࡍࡿࡇ࡜࡟ࡼࡾ⤖ᬗ⢏ࡣᚤ⣽໬ ࡍࡿ㸬 ༳ຍ㟁ὶཬࡧ☢ሙࡢቑ኱࡟క࠸⤖ᬗ⢏ࡀᚤ ⣽໬ࡍࡿ 6U ࡢῧຍࡣඹᬗ 6L ࢆᚤ⣽໬ࡋ㸪㟁☢᧠ᢾࡢ ຠᯝࢆಁ㐍ࡉࡏࡿ㸬 ཧ⪃ᩥ⊩ _{㕲㗰࣭㠀㕲㔠ᒓ࣭㔠ᒓ〇ရ⤫ィᖺሗ㸪⤒῭⏘ᴗ┬㸪} S ᅗ ༳ຍ㟁ὶ࡜࣑ࢡࣟ⤌⧊ࡢ㛵ಀ 㛗⯪ ᗣ⿱㸪⏣‮ၿ❶㸪᱈㔝ṇ

- 44 -

ࢆ♧ࡍ㸬㟁☢᧠ᢾ࡞ࡋ㸦$㸧࡛ࡣᰕ≧ࢹࣥࢻࣛ࢖ ࢺ⤌⧊ࡀⓎ㐩ࡋ࡚࠸ࡓ㸬୍᪉㸪㟁☢᧠ᢾࡋࡓࡶࡢ ࡛ࡣ༳ຍ㟁ὶࡢቑ኱࡟కࡗ࡚᪉ྥᛶࡢ࡞࠸ᚤ⣽࡞ ➼㍈ࢹࣥࢻࣛ࢖ࢺ⤌⧊࡟ኚ໬ࡋ࡚࠸ࡓ㸬ࡲࡓ㸪༳ ຍ☢ሙࡀ኱ࡁࡃ࡞ࡿ࡯࡝ᚤ⣽໬ࡀಁ㐍ࡉࢀࡓ㸬 ᾮ┦ࡀᏑᅾࡍࡿ Υ࡛᧠ᢾ೵Ṇ ඹᬗ ᗘ௨ୗࡲ࡛᧠ᢾ ᅗ 㟁☢᧠ᢾ ᗘ⠊ᅖ࡜࣐ࢡࣟ⤌⧊ࡢ㛵ಀ 㹫7$ ᅗ ༳ຍ㟁ὶ࡜࣐ࢡࣟ⤌⧊ࡢ㛵ಀ ᅗ ࣑ࢡࣟ⤌⧊࡟ཬࡰࡍ 6U ࡜㟁☢᧠ᢾࡢᙳ㡪 ࣑ࢡࣟ⤌⧊࡟ཬࡰࡍ 6U ῧຍࡢᙳ㡪ࢆᅗ ࡟♧ࡍ㸬㟁☢᧠ᢾࡢ᭷↓࡟࠿࠿ࢃࡽࡎ㸪6U ࡢῧຍ࡟ࡼࡾᚤ ⣽໬ࡋࡓ㸬ࡲࡓ㸪6U ࢆྵ᭷ࡋ㟁☢᧠ᢾࡋࡓࡶࡢ࡛ ࡣඹᬗจᅛ⤌⧊ࡀᚤ⣽໬ࡋ࡚࠸ࡓ㸬6U ࡣඹᬗࢩࣜ ࢥࣥ⤖ᬗࡢ᰾⏕ᡂࡢಁ㐍࡜ඹᬗࢩࣜࢥࣥ⤖ᬗ⢏ࡢ ᡂ㛗ࢆᢚไࡍࡿ㸬ࡇࡢࡇ࡜࠿ࡽ 6U ࡢῧຍ࡟ࡼࡗ࡚ ඹᬗࢩࣜࢥࣥࡢᚤ⣽໬ࡋ㸪ࡉࡽ࡟㟁☢᧠ᢾ࡛ࡢᚤ ⣽໬ࢆಁ㐍ࡍࡿ࡜⪃࠼ࡽࢀࡿ㸬 ࡲ࡜ࡵ _{$OPDVV6L ྜ㔠ࡢ⁐‮ࢆඹᬗ ᗘ௨ୗࡲ} ࡛㟁☢᧠ᢾࡍࡿࡇ࡜࡟ࡼࡾ⤖ᬗ⢏ࡣᚤ⣽໬ ࡍࡿ㸬 _{༳ຍ㟁ὶཬࡧ☢ሙࡢቑ኱࡟క࠸⤖ᬗ⢏ࡀᚤ} ⣽໬ࡍࡿ 6U ࡢῧຍࡣඹᬗ 6L ࢆᚤ⣽໬ࡋ㸪㟁☢᧠ᢾࡢ ຠᯝࢆಁ㐍ࡉࡏࡿ㸬 ཧ⪃ᩥ⊩ _{㕲㗰࣭㠀㕲㔠ᒓ࣭㔠ᒓ〇ရ⤫ィᖺሗ㸪⤒῭⏘ᴗ┬㸪} S ᅗ ༳ຍ㟁ὶ࡜࣑ࢡࣟ⤌⧊ࡢ㛵ಀ 室工大紀要第_{63 号（2013） 45~48}

_{特　　　集}

ᐊᕤ኱⣖せ➨_{63 ྕ㸦2013㸧 45㹼48}

- 45 -

࢔࣑ࣝࢽ࣒࢘ྜ㔠ࡢᣑᩓ᥋ྜ࡟࠾ࡅࡿ

ᕼᅵ㢮ඖ⣲ῧຍࡢᙳ㡪

⏣‮

_ၿ❶

*1, *2

Effects of Rare Earth Elements on Diffusion Bonding

of Aluminum Alloy

Yoshinori TAYU

*1, *2

㸦ཎ✏ཷ௜᪥ ᖹᡂ

_{25 ᖺ 9 ᭶ 30 ᪥ ㄽᩥཷ⌮᪥ ᖹᡂ 26 ᖺ 1 ᭶ 24 ᪥㸧}

Abstract

In this report, we discussed the influence of rare-earth element on diffusion bonding of aluminum alloy to steel. The three types Al-RE alloys were made. In this alloy, rare-earth element silicide or rare-earth element calcium silicide precipitates were observed. But clear identification of the precipitates was not possible. In diffusion bonding of aluminum alloy to steel, two kinds of intermetallic compounds (FeAl3 and Fe2Al5) layer were made near the bonded interface. The width of

intermetallic compounds layer were increased in the case of Al-RE alloy. It is thought that rare-earth element or Si in aluminum alloy effect on increasing of intermetallic compounds layer's width. Keywords : Rare-earth element, Aluminum alloy, Diffusion bonding

1 ࡣࡌࡵ࡟ ࢔࣑ࣝࢽ࣒࢘ྜ㔠ࡣ㌴୧㸪⯪⯧㸪ᘓᮦ㸪⯟✵Ᏹᐂ ᶵ㸪໬Ꮫ⸆ရࢱࣥࢡ࡞࡝ᖜᗈ࠸ศ㔝࡛ᛂ⏝ࡉࢀ࡚࠸ ࡿ㸬ࡋ࠿ࡋ㸪࢔࣑ࣝࢽ࣒࢘ྜ㔠ࡣ✵Ẽ୰ࡢ㓟⣲࡜཯ ᛂࡋ㸪⾲㠃࡟㓟໬⓶⭷ࢆᙧᡂࡋࡸࡍ࠸㸬ࡇࡢ㓟໬≀ ࡣ⇕ຊᏛⓗ࡟㠀ᖖ࡟Ᏻᐃ࡛࠶ࡾ㸪࠿ࡘ⦓ᐦ࡛࠶ࡿࡓ ࡵ㸪࢔࣑ࣝࢽ࣒࢘ࡢ⾲㠃࡟㓟໬⓶⭷ࡀᏑᅾࡍࡿ࡜ᣑ ᩓࢆ㜼ᐖࡋᣑᩓ᥋ྜ࡞࡝ࡢ」ྜ໬ࡀᅔ㞴࡜࡞ࡿ㸬 ୍᪉㸪࢔࣑ࣝࢽ࣒࢘࡟࣐ࢢࢿࢩ࣒࢘ࢆ㐺㔞ῧຍࡍ ࡿࡇ࡜࡟ࡼࡾ㸪࢔࣑ࣝࢽ࣒࢘⾲㠃࡟ᙧᡂࡉࢀࡿ㓟໬ ≀ࡢ໬Ꮫ⤌ᡂࡸᙧ≧ࡀኚ໬ࡍࡿ࡜ሗ࿌ࡉࢀ࡚࠸ࡿ(1)㸬 ࡲࡓ㸪୍⯡࡟ᕼᅵ㢮ඖ⣲ࡣ㓟໬ࡋࡸࡍࡃ㸪ࢁ࠺᥋࡟ ࠾࠸࡚ࢁ࠺ᮦ࡟ᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍࡍࡿࡇ࡜࡟ࡼ ࡿ᥋ྜᛶྥୖࡀヨࡳࡽࢀ࡚࠸ࡿ(2)-(4)_{㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪} ẕᮦഃ࡬ᕼᅵ㢮ඖ⣲ࢆῧຍࡍࡿࡇ࡜࡟ࡼࡿ᥋ྜᛶ࡬ ࡢᙳ㡪࡟ࡘ࠸࡚ࡣ୙᫂࡞Ⅼࡀከ࠸㸬ᚑࡗ࡚㸪᥋ྜ㐣 ⛬࡟࠾ࡅࡿ࢔࣑ࣝࢽ࣒࢘ྜ㔠୰ࡢᕼᅵ㢮ඖ⣲ࡢᣲື ࢆゎ᫂ࡍࡿࡇ࡜࡟ࡼࡾ㸪࢔࣑ࣝࢽ࣒࢘ྜ㔠ࡢ᥋ྜᛶ ྥୖࡸ᥋ྜࣉࣟࢭࢫࡢ᭱㐺໬࡞࡝ࡀᮇᚅ࡛ࡁࡿ㸬 ࡑࡇ࡛ᮏ◊✲࡛ࡣ㸪ᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍࡋࡓ࢔ ࣑ࣝࢽ࣒࢘ྜ㔠ࢆ⁐〇ࡋ㸪ᣑᩓ᥋ྜࢆ⾜࠺ࡇ࡜࡟ࡼ ࡾᕼᅵ㢮ඖ⣲ࡢᙳ㡪ࢆㄪᰝࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓ㸬 2 ᐇ㦂᪉ἲ 2.1 Al-RE ྜ㔠ࡢస〇 ⣧࢔࣑ࣝࢽ࣒࢘㸦99.87%Al㸧࡜㸪RE-Ca-Si ྜ㔠ࢆ ཎᩱ࡜ࡋ࡚ᕼᅵ㢮ඖ⣲⃰ᗘࡢ␗࡞ࡿ_{3 ✀㢮ࡢ Al-RE} ྜ㔠ࢆస〇ࡋࡓ㸬RE-Ca-Si ྜ㔠ࡣ⌫≧㯮㖄㗪㕲ࢆ〇㐀ࡍࡿ㝿࡟⏝࠸ࡽࢀࡿῧຍ๣࡜ࡋ࡚ᕷ㈍ࡉࢀ࡚࠾ࡾ㸪 ⣧≀㉁ࡼࡾᏳ౯࡛࠶ࡿ㸬RE-Ca-Si ྜ㔠࡜స〇ࡋࡓ Al-RE ྜ㔠ࡢ໬Ꮫ⤌ᡂࢆࡑࢀࡒࢀ⾲ 1 ࡜ 2 ࡟♧ࡍ㸬 Al-RE ྜ㔠ࡢ⁐〇ࡣ Ar ࢞ࢫ㞺ᅖẼ୰࡟࡚⾜࠸㸪⣧࢔ ࣑ࣝࢽ࣒࢘ࢆ࢔࣑ࣝࢼࡿࡘࡰ୰ _{800Υ࡛⁐ゎࡋࡓᚋ} *1 ᐊ⹒ᕤᴗ኱Ꮫ ࡶࡢ๰㐀⣔㡿ᇦ *2 ᐊ⹒ᕤᴗ኱Ꮫ ⎔ቃㄪ࿴ᮦᩱ⛉Ꮫ◊✲ࢭࣥࢱ࣮

(3)

－　46　－ ⏣‮ၿ❶

- 46 -

RE-Ca-Si ྜ㔠ࢆῧຍࡋ㸪㔠ᆺ࡟ὀ‮ࡋ࡚࢖ࣥࢦࢵࢺ ࢆᚓࡓ㸬⾲_{1 RE-Ca-Si ྜ㔠ࡢ⤌ᡂ} Si Ca RE RE-Ca-Si 46.4 8.6 31.7 (mass%) ⾲2 Al-RE ྜ㔠ࡢ⤌ᡂ No. Al Si Ca Ce La 1 Bal. 0.09 0.05 0.02 0.01 2 Bal. 1.58 0.37 0.37 0.17 3 Bal. 3.19 0.89 0.85 0.41 (mass%) 2.2 Al-RE ྜ㔠ࡢᣑᩓ᥋ྜ ⁐〇ࡋࡓ࢖ࣥࢦࢵࢺ࠿ࡽ᪕┙ຍᕤ࡟ࡼࡾ┤ᚄ ₁₀ mm ࡢ෇ᰕࢆస〇ࡋࡓ㸬෇ᰕࡢ➃㠃ࢆ᥋ྜ㠃࡜ࡋ࡚ 6 m ࡢࣂࣇ◊☻࡟ࡼࡾ㙾㠃௙ୖࡆࡋ㸪࢚ࢱࣀ࣮ࣝ୰ ࡛_{5 ศ㛫㉸㡢ἼὙίࡋࡓᚋ㸪ᣑᩓ᥋ྜ࡟౪ࡋࡓ㸬ᣑ} ᩓ᥋ྜࡢ┦ᡭᮦࡣ୍⯡ᵓ㐀⏝ᅽᘏ㗰ᮦ㸦_SS400㸧࡜ ࡋ㸪໬Ꮫ⤌ᡂࢆ⾲_{3 ࡟♧ࡋࡓ㸬SS400 ᥋ྜ㠃ࡢ௙ୖ} ࡆࡣ_{Al-RE ྜ㔠࡜ྠᵝ࡜ࡋࡓ㸬ࡲࡓ㸪Si ࡀ᥋ྜᛶ࡟} ୚࠼ࡿᙳ㡪ࢆ⪃៖ࡋ_{Al-1.5mass%Si ࡜ SS400 ࡢ᥋ྜ} ⥅ᡭࡶస〇ࡋࡓ㸬 Al-RE ྜ㔠࡜ SS400 ࢆ✺ࡁྜࢃࡏ㸪᥋ྜ ᗘ 600Υ㸪 ᥋ྜᅽຊ_{1 MPa㸪᥋ྜ᫬㛫 1.8 ks㸪6.0×10}-2_{Pa ࡢ᮲௳} ࡛ᣑᩓ᥋ྜࡋࡓ㸬ࡲࡓ㸪᥋ྜᚋ㸪ヨᩱࢆ᥋ྜ ᗘ࡜ ྠ ᗘ࡛_{7.2 ks ಖᣢࡋࡓᚋ⇕ฎ⌮ヨᩱࢆస〇ࡋࡓ㸬} ⾲_{3 ᅽᘏ⏝㗰ᮦ SS400 ࡢ⤌ᡂ} Fe C Si Mn P S SS400 Bal. 0.09 0.11 0.45 0.22 0.38 (mass%) స〇ࡋࡓ_{Al-RE ྜ㔠࠾ࡼࡧᣑᩓ᥋ྜヨᩱ࡟ᑐࡋ࡚㸪} ගᏛ㢧ᚤ㙾࡟ࡼࡿ⤌⧊ほᐹ㸪㹖⥺ᅇᢡ࡟ࡼࡿᙧᡂ≀ ㉁ྠᐃ㸪_{EPMA ࡟ࡼࡿඖ⣲ศᕸㄪᰝࢆ⾜ࡗࡓ㸬} 3 ᐇ㦂⤖ᯝ 3.1 Al-RE ྜ㔠ࡢホ౯ ᅗ_{1 ࡟⁐〇ࡋࡓྛ Al-RE ྜ㔠ࡢ⤌⧊෗┿ࢆ♧ࡍ㸬} ࡑࢀࡒࢀࡢྜ㔠࡟ࡣ኱ࡁࡃศ㢮ࡋ࡚㸪ᚤ⣽࡞㔪≧ᯒ ฟ≀࡜⢒኱࡞Წ≧࣭ゅ≧ࡢᯒฟ≀ࡀ☜ㄆࡉࢀ㸪_RE ࡢྵ᭷㔞ࡀቑຍࡍࡿ࡟ࡋࡓࡀ࠸ᯒฟ≀ࡢࢧ࢖ࢬࡣ኱ ࡁࡃ࡞ࡗࡓ㸬 ᅗ_{1 Al-RE ྜ㔠ࡢᚤ⣽ᵓ㐀ほᐹ⤖ᯝ} ᅗ _{2 ࡟ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧ࡢ} EPMA 㠃ศᯒ⤖ᯝࢆ♧ࡍ㸬ᅗ 2 ࡟㓟⣲ࡢඖ⣲ศᕸࡣ ♧ࡋ࡚࠸࡞࠸ࡀ㸪ࡍ࡭࡚ࡢ_{Al-RE ྜ㔠࡛㓟⣲ࡢ⃰໬} 㒊ࡣㄆࡵࡽࢀࡎ㸪ほᐹࡉࢀࡓᯒฟ≀࡟㓟໬≀ࡣᏑᅾ ࡋ࡞࠿ࡗࡓ㸬ࡇࢀࡣ㸪㓟໬≀ࡀ_{Al-RE ྜ㔠ࢆ⁐〇ࡋ} ࡓ㝿࡟ᾋୖ࣭㝖ཤࡉࢀࡿࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪 ୍㒊࡟_{Fe ࡢ⃰໬ࡀㄆࡵࡽࢀࡓ㸬}

ᯒฟ≀ࡣ୺࡟_{Al, Si, Ca, Ce ࡛ᙧᡂࡉࢀ࡚࠸ࡿࡀ㸪}

⢒኱࡞Წ≧࠾ࡼࡧゅ≧ࡢᯒฟ≀࡛ࡣ_{Ca ⃰ᗘࡀ㧗ࡃ㸪}

⣽࠿࡞㔪≧ࡢᯒฟ≀࡛ࡣ_{Ce ⃰ᗘࡀ㧗ࡃ Ca ࡯࡜ࢇ࡝}

Ꮡᅾࡋ࡚࠸࡞࠿ࡗࡓ㸬

ᅗ_{2 EPMA ほᐹ⤖ᯝ (No.3 ྜ㔠)}

஧ඖ⣔≧ែᅗ(5)_{࡟࠾࠸࡚ྛඖ⣲ࡢ⃰ᗘẚࢆ⪃៖ࡍ}

ࡿ࡜㸪_{Al, Si, Ca, Ce ࡢ⤌ࡳྜࢃࡏ࡛Ꮡᅾࡍࡿྍ⬟ᛶ}

ࡀ࠶ࡿ໬ྜ≀ࡣ_Al₁₁_Ce₃㸪_Al₄_Ca㸪Ca₂_{Si㸪CaSi㸪CaSi}₂ ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛㸪_{NaOH ࡟ࡼࡗ࡚ Al-RE} ⏣‮ၿ❶

- 46 -

RE-Ca-Si ྜ㔠ࢆῧຍࡋ㸪㔠ᆺ࡟ὀ‮ࡋ࡚࢖ࣥࢦࢵࢺ ࢆᚓࡓ㸬⾲_{1 RE-Ca-Si ྜ㔠ࡢ⤌ᡂ} Si Ca RE RE-Ca-Si 46.4 8.6 31.7 (mass%) ⾲_{2 Al-RE ྜ㔠ࡢ⤌ᡂ} No. Al Si Ca Ce La 1 Bal. 0.09 0.05 0.02 0.01 2 Bal. 1.58 0.37 0.37 0.17 3 Bal. 3.19 0.89 0.85 0.41 (mass%) 2.2 Al-RE ྜ㔠ࡢᣑᩓ᥋ྜ ⁐〇ࡋࡓ࢖ࣥࢦࢵࢺ࠿ࡽ᪕┙ຍᕤ࡟ࡼࡾ┤ᚄ ₁₀ mm ࡢ෇ᰕࢆస〇ࡋࡓ㸬෇ᰕࡢ➃㠃ࢆ᥋ྜ㠃࡜ࡋ࡚ 6 m ࡢࣂࣇ◊☻࡟ࡼࡾ㙾㠃௙ୖࡆࡋ㸪࢚ࢱࣀ࣮ࣝ୰ ࡛_{5 ศ㛫㉸㡢ἼὙίࡋࡓᚋ㸪ᣑᩓ᥋ྜ࡟౪ࡋࡓ㸬ᣑ} ᩓ᥋ྜࡢ┦ᡭᮦࡣ୍⯡ᵓ㐀⏝ᅽᘏ㗰ᮦ㸦_SS400㸧࡜ ࡋ㸪໬Ꮫ⤌ᡂࢆ⾲_{3 ࡟♧ࡋࡓ㸬SS400 ᥋ྜ㠃ࡢ௙ୖ} ࡆࡣ_{Al-RE ྜ㔠࡜ྠᵝ࡜ࡋࡓ㸬ࡲࡓ㸪Si ࡀ᥋ྜᛶ࡟} ୚࠼ࡿᙳ㡪ࢆ⪃៖ࡋ_{Al-1.5mass%Si ࡜ SS400 ࡢ᥋ྜ} ⥅ᡭࡶస〇ࡋࡓ㸬 Al-RE ྜ㔠࡜ SS400 ࢆ✺ࡁྜࢃࡏ㸪᥋ྜ ᗘ 600Υ㸪 ᥋ྜᅽຊ1 MPa㸪᥋ྜ᫬㛫 1.8 ks㸪6.0×10-2 Pa ࡢ᮲௳ ࡛ᣑᩓ᥋ྜࡋࡓ㸬ࡲࡓ㸪᥋ྜᚋ㸪ヨᩱࢆ᥋ྜ ᗘ࡜ ྠ ᗘ࡛_{7.2 ks ಖᣢࡋࡓᚋ⇕ฎ⌮ヨᩱࢆస〇ࡋࡓ㸬} ⾲3 ᅽᘏ⏝㗰ᮦ SS400 ࡢ⤌ᡂ Fe C Si Mn P S SS400 Bal. 0.09 0.11 0.45 0.22 0.38 (mass%) స〇ࡋࡓ_{Al-RE ྜ㔠࠾ࡼࡧᣑᩓ᥋ྜヨᩱ࡟ᑐࡋ࡚㸪} ගᏛ㢧ᚤ㙾࡟ࡼࡿ⤌⧊ほᐹ㸪㹖⥺ᅇᢡ࡟ࡼࡿᙧᡂ≀ ㉁ྠᐃ㸪_{EPMA ࡟ࡼࡿඖ⣲ศᕸㄪᰝࢆ⾜ࡗࡓ㸬} 3 ᐇ㦂⤖ᯝ 3.1 Al-RE ྜ㔠ࡢホ౯ ᅗ_{1 ࡟⁐〇ࡋࡓྛ Al-RE ྜ㔠ࡢ⤌⧊෗┿ࢆ♧ࡍ㸬} ࡑࢀࡒࢀࡢྜ㔠࡟ࡣ኱ࡁࡃศ㢮ࡋ࡚㸪ᚤ⣽࡞㔪≧ᯒ ฟ≀࡜⢒኱࡞Წ≧࣭ゅ≧ࡢᯒฟ≀ࡀ☜ㄆࡉࢀ㸪_RE ࡢྵ᭷㔞ࡀቑຍࡍࡿ࡟ࡋࡓࡀ࠸ᯒฟ≀ࡢࢧ࢖ࢬࡣ኱ ࡁࡃ࡞ࡗࡓ㸬 ᅗ_{1 Al-RE ྜ㔠ࡢᚤ⣽ᵓ㐀ほᐹ⤖ᯝ} ᅗ _{2 ࡟ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧ࡢ} EPMA 㠃ศᯒ⤖ᯝࢆ♧ࡍ㸬ᅗ 2 ࡟㓟⣲ࡢඖ⣲ศᕸࡣ ♧ࡋ࡚࠸࡞࠸ࡀ㸪ࡍ࡭࡚ࡢ_{Al-RE ྜ㔠࡛㓟⣲ࡢ⃰໬} 㒊ࡣㄆࡵࡽࢀࡎ㸪ほᐹࡉࢀࡓᯒฟ≀࡟㓟໬≀ࡣᏑᅾ ࡋ࡞࠿ࡗࡓ㸬ࡇࢀࡣ㸪㓟໬≀ࡀ_{Al-RE ྜ㔠ࢆ⁐〇ࡋ} ࡓ㝿࡟ᾋୖ࣭㝖ཤࡉࢀࡿࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪 ୍㒊࡟_{Fe ࡢ⃰໬ࡀㄆࡵࡽࢀࡓ㸬}

ᯒฟ≀ࡣ୺࡟Al, Si, Ca, Ce ࡛ᙧᡂࡉࢀ࡚࠸ࡿࡀ㸪

⣽࠿࡞㔪≧ࡢᯒฟ≀࡛ࡣCe ⃰ᗘࡀ㧗ࡃ Ca ࡯࡜ࢇ࡝

஧ඖ⣔≧ែᅗ(5)_{࡟࠾࠸࡚ྛඖ⣲ࡢ⃰ᗘẚࢆ⪃៖ࡍ}

ࡀ࠶ࡿ໬ྜ≀ࡣ_Al₁₁_Ce₃㸪_Al₄_Ca㸪Ca₂_{Si㸪CaSi㸪CaSi}₂ ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛㸪_{NaOH ࡟ࡼࡗ࡚ Al-RE} ᐊᕤ኱⣖せ➨_{63 ྕ㸦2013㸧 45㹼48}

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ྜ㔠ࡢ࢔࣑ࣝࢽ࣒࢘ࢆ⁐ゎࡋ㸪ṧ´⢊ᮎࡢ㹖⥺ᅇᢡ ࢆ⾜ࡗࡓ㸬 ᐃࡉࢀࡓᅇᢡࣆ࣮ࢡ㸦ᅗ _{3㸧࠿ࡽ๓㏙} ࡢ஧ඖ⣔໬ྜ≀ࡣྠᐃࡉࢀࡎ㸪ẚ㍑ⓗ㏆࠸ࣃࢱ࣮ࣥ ࢆ♧ࡋࡓ_CaAlSi2ࡸCaAl2Si1.5࡟ࡘ࠸࡚ࡶ୙୍⮴ࡢ㒊 ศࡀ࠶ࡾ㸪஧ඖ⣔㸪୕ඖ⣔ࡢ໬ྜ≀ࡀ」ᩘ✀Ꮡᅾࡋ ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪_{Al-Si-Ce ࡢ୕ඖ⣔≧ែ} ᅗ(6)_{࠿ࡽ㸪ᮏᐇ㦂ࡢ}_{Al-RE ྜ㔠⁐〇 ᗘ࡟࠾ࡅࡿᏑ} ᅾ┦ࡣ_{(Al)㸩(Si)㸩AlCeSi}2࡛࠶ࡿࡇ࡜࠿ࡽ㸪CaAlSi2 ࡢ_{Ca ࡢ୍㒊ࡀ Ce ࡟⨨᥮ࡉࢀࡓ໬ྜ≀ࡀᏑᅾࡍࡿྍ} ⬟ᛶࡀ⪃࠼ࡽࢀࡿ㸬 ᅗ_{3 NaOH ᾐฟṧ´ࡢ XRD ᅇᢡࣃࢱ࣮ࣥ} 3.2 Al-RE ྜ㔠࡜㕲㗰ᮦᩱࡢᣑᩓ᥋ྜ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧㸭SS400 ⥅ ᡭࡢ᥋ྜ⏺㠃㏆ഐࡢගᏛ㢧ᚤ㙾෗┿ࢆᅗ4 ࡟♧ࡍ㸬 ᥋ྜ⏺㠃࡟㔠ᒓ㛫໬ྜ≀࡜⪃࠼ࡽࢀࡿᯒฟ≀ᒙࡀ⏕ ࡌ㸪ᚋ⇕ฎ⌮᫬㛫7.2 ks ࡛ࡣᯒฟ≀ᒙࡣ 100 m ⛬ᗘ ࡲ࡛ᡂ㛗ࡋ㸪_{Al-RE ྜ㔠୰ࡢᯒฟ≀ࡣ⢒኱໬ࡋࡓ㸬} Al-0.85%Ce-0.41%La㸭SS400㸦ᚋ⇕ฎ⌮ 7.2 ks㸧࡜ Al-1.5mass%Si㸭SS400㸦ᚋ⇕ฎ⌮ 3.6 ks㸧ࡢ᥋ྜ⏺㠃㏆ഐࡢ_{EPMA ศᯒ⤖ᯝࢆᅗ 5 ࡟♧ࡍ㸬ࡓࡔࡋ㸪ᅗ 5(a)} ࡟ࡣほᐹヨᩱస〇᫬࡟ᙧᡂࡋࡓ๭ࢀࡀヨᩱ୰ኸ㒊࡟ Ꮡᅾࡋ࡚࠸ࡿ㸬ᅗ5(a)㸪(b)ࡢ࠸ࡎࢀࡢሙྜࡶ᥋ྜ⏺ 㠃࡟_{Al-Fe ⣔㔠ᒓ㛫໬ྜ≀ࡢᙧᡂࡀ☜ㄆࡉࢀࡓ㸬໬} ྜ≀ᒙෆ࡟Al ࠾ࡼࡧ Fe ⃰ᗘࡢ⃰ῐࡀㄆࡵࡽࢀ㸪໬ ྜ≀ᒙ࡟ࡣ_{2 ┦ࡀඹᏑࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬㐣ཤ} ࡢሗ࿌(7)_{࡟ࡼࡿ࡜࢔࣑ࣝࢽ࣒࢘ྜ㔠࡜㗰ࡢ᥋ྜ࡟࠾} ࠸࡚_{Fe ഃẕᮦ࠿ࡽ㡰࡟ Fe}₂_Al₅㸪_FeAl₃ࡀᙧᡂࡉࢀࡿ ࡜ሗ࿌ࡉࢀ࡚࠸ࡿ㸬ᮏ◊✲࡟࠾࠸࡚᥋ྜヨᩱࡢ◚᩿ 㠃࡟࠾ࡅࡿ㹖⥺ᅇᢡ࠿ࡽ☜ㄆ࡛ࡁࡓࡢࡣ_Fe₂_Al₅ࡢࡳ ࡛࠶ࡗࡓࡀ㸪㐣ཤࡢሗ࿌࡜ྠᵝ࡟_Fe2Al5㸪FeAl3ࡀᏑ ᅾࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ᅗ_{5(a)࡜ 5(b)࡛ࡣᚋ⇕ฎ} ⌮᫬㛫ࡀ␗࡞ࡿࡓࡵ༢⣧࡟ẚ㍑ࡍࡿࡇ࡜ࡣ࡛ࡁ࡞࠸ ࡀ㸪໬ྜ≀ࡢᡂ㛗ࡀᣑᩓᚊ㏿࡟ࡼࡾ᫬㛫ࡢᖹ᪉᰿࡟ ẚ౛ࡍࡿ࡜⪃࠼ࡿ࡜㸪ᅗ_{5(b)࡛ほᐹࡉࢀࡓ໬ྜ≀ᒙ} ࡢ᪉ࡀࠊࡼࡾᆒ୍࡛ཌࡃᡂ㛗ࡋ࡚࠸ࡿ㸬ᅗ_5(b)ࡢ Al-RE ྜ㔠ࡢሙྜࡣ Al-Fe ⣔㔠ᒓ㛫໬ྜ≀┦୰࡟ Si ࡢṧ␃ࡀㄆࡵࡽࢀࡓࡀ_{Ce㸪La ࡣ☜ㄆ࡛ࡁ࡞࠿ࡗࡓ㸬} ᅗ _{4 Al-RE ྜ㔠 / SS400 ᥋ྜ⏺㠃ࡢගᏛ㢧} ᚤ㙾෗┿

㸦Post-bond heat treatment time=7.2 ks㸧

(a) Al-1.5mass%Si / SS400 (b) Al-0.85%Ce-0.41%La / SS400 ᅗ 5 ᥋ྜ⏺㠃㏆ഐࡢ EPMA ほᐹ⤖ᯝ 3.3 ⪃ᐹ ๓㏙ࡋࡓࡼ࠺࡟㸪ࢁ࠺ᮦ࡟ᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍ ࡣࢁ࠺᥋ᛶࢆྥୖࡉࡏࡿຠᯝࡀ࠶ࡿ㸬ࡇࢀࡣࠊᕼᅵ 㢮ඖ⣲ࡀ࢔࣑ࣝࢽ࣒࢘⾲㠃ࡢ㓟໬≀ᒙࢆ㑏ඖࡍࡿࡇ

(4)

－　47　－ ⏣‮ၿ❶

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RE-Ca-Si ྜ㔠ࢆῧຍࡋ㸪㔠ᆺ࡟ὀ‮ࡋ࡚࢖ࣥࢦࢵࢺ ࢆᚓࡓ㸬⾲_{1 RE-Ca-Si ྜ㔠ࡢ⤌ᡂ} Si Ca RE RE-Ca-Si 46.4 8.6 31.7 (mass%) ⾲2 Al-RE ྜ㔠ࡢ⤌ᡂ No. Al Si Ca Ce La 1 Bal. 0.09 0.05 0.02 0.01 2 Bal. 1.58 0.37 0.37 0.17 3 Bal. 3.19 0.89 0.85 0.41 (mass%) 2.2 Al-RE ྜ㔠ࡢᣑᩓ᥋ྜ ⁐〇ࡋࡓ࢖ࣥࢦࢵࢺ࠿ࡽ᪕┙ຍᕤ࡟ࡼࡾ┤ᚄ ₁₀ mm ࡢ෇ᰕࢆస〇ࡋࡓ㸬෇ᰕࡢ➃㠃ࢆ᥋ྜ㠃࡜ࡋ࡚ 6 m ࡢࣂࣇ◊☻࡟ࡼࡾ㙾㠃௙ୖࡆࡋ㸪࢚ࢱࣀ࣮ࣝ୰ ࡛_{5 ศ㛫㉸㡢ἼὙίࡋࡓᚋ㸪ᣑᩓ᥋ྜ࡟౪ࡋࡓ㸬ᣑ} ᩓ᥋ྜࡢ┦ᡭᮦࡣ୍⯡ᵓ㐀⏝ᅽᘏ㗰ᮦ㸦_SS400㸧࡜ ࡋ㸪໬Ꮫ⤌ᡂࢆ⾲_{3 ࡟♧ࡋࡓ㸬SS400 ᥋ྜ㠃ࡢ௙ୖ} ࡆࡣ_{Al-RE ྜ㔠࡜ྠᵝ࡜ࡋࡓ㸬ࡲࡓ㸪Si ࡀ᥋ྜᛶ࡟} ୚࠼ࡿᙳ㡪ࢆ⪃៖ࡋ_{Al-1.5mass%Si ࡜ SS400 ࡢ᥋ྜ} ⥅ᡭࡶస〇ࡋࡓ㸬 Al-RE ྜ㔠࡜ SS400 ࢆ✺ࡁྜࢃࡏ㸪᥋ྜ ᗘ 600Υ㸪 ᥋ྜᅽຊ_{1 MPa㸪᥋ྜ᫬㛫 1.8 ks㸪6.0×10}-2_{Pa ࡢ᮲௳} ࡛ᣑᩓ᥋ྜࡋࡓ㸬ࡲࡓ㸪᥋ྜᚋ㸪ヨᩱࢆ᥋ྜ ᗘ࡜ ྠ ᗘ࡛_{7.2 ks ಖᣢࡋࡓᚋ⇕ฎ⌮ヨᩱࢆస〇ࡋࡓ㸬} ⾲_{3 ᅽᘏ⏝㗰ᮦ SS400 ࡢ⤌ᡂ} Fe C Si Mn P S SS400 Bal. 0.09 0.11 0.45 0.22 0.38 (mass%) స〇ࡋࡓ_{Al-RE ྜ㔠࠾ࡼࡧᣑᩓ᥋ྜヨᩱ࡟ᑐࡋ࡚㸪} ගᏛ㢧ᚤ㙾࡟ࡼࡿ⤌⧊ほᐹ㸪㹖⥺ᅇᢡ࡟ࡼࡿᙧᡂ≀ ㉁ྠᐃ㸪_{EPMA ࡟ࡼࡿඖ⣲ศᕸㄪᰝࢆ⾜ࡗࡓ㸬} 3 ᐇ㦂⤖ᯝ 3.1 Al-RE ྜ㔠ࡢホ౯ ᅗ_{1 ࡟⁐〇ࡋࡓྛ Al-RE ྜ㔠ࡢ⤌⧊෗┿ࢆ♧ࡍ㸬} ࡑࢀࡒࢀࡢྜ㔠࡟ࡣ኱ࡁࡃศ㢮ࡋ࡚㸪ᚤ⣽࡞㔪≧ᯒ ฟ≀࡜⢒኱࡞Წ≧࣭ゅ≧ࡢᯒฟ≀ࡀ☜ㄆࡉࢀ㸪_RE ࡢྵ᭷㔞ࡀቑຍࡍࡿ࡟ࡋࡓࡀ࠸ᯒฟ≀ࡢࢧ࢖ࢬࡣ኱ ࡁࡃ࡞ࡗࡓ㸬 ᅗ_{1 Al-RE ྜ㔠ࡢᚤ⣽ᵓ㐀ほᐹ⤖ᯝ} ᅗ _{2 ࡟ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧ࡢ} EPMA 㠃ศᯒ⤖ᯝࢆ♧ࡍ㸬ᅗ 2 ࡟㓟⣲ࡢඖ⣲ศᕸࡣ ♧ࡋ࡚࠸࡞࠸ࡀ㸪ࡍ࡭࡚ࡢ_{Al-RE ྜ㔠࡛㓟⣲ࡢ⃰໬} 㒊ࡣㄆࡵࡽࢀࡎ㸪ほᐹࡉࢀࡓᯒฟ≀࡟㓟໬≀ࡣᏑᅾ ࡋ࡞࠿ࡗࡓ㸬ࡇࢀࡣ㸪㓟໬≀ࡀ_{Al-RE ྜ㔠ࢆ⁐〇ࡋ} ࡓ㝿࡟ᾋୖ࣭㝖ཤࡉࢀࡿࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪 ୍㒊࡟_{Fe ࡢ⃰໬ࡀㄆࡵࡽࢀࡓ㸬}

ᯒฟ≀ࡣ୺࡟_{Al, Si, Ca, Ce ࡛ᙧᡂࡉࢀ࡚࠸ࡿࡀ㸪}

⣽࠿࡞㔪≧ࡢᯒฟ≀࡛ࡣ_{Ce ⃰ᗘࡀ㧗ࡃ Ca ࡯࡜ࢇ࡝}

஧ඖ⣔≧ែᅗ(5)_{࡟࠾࠸࡚ྛඖ⣲ࡢ⃰ᗘẚࢆ⪃៖ࡍ}

ࡀ࠶ࡿ໬ྜ≀ࡣ_Al₁₁_Ce₃㸪_Al₄_Ca㸪Ca₂_{Si㸪CaSi㸪CaSi}₂ ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛㸪_{NaOH ࡟ࡼࡗ࡚ Al-RE} ⏣‮ၿ❶

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RE-Ca-Si ྜ㔠ࢆῧຍࡋ㸪㔠ᆺ࡟ὀ‮ࡋ࡚࢖ࣥࢦࢵࢺ ࢆᚓࡓ㸬⾲_{1 RE-Ca-Si ྜ㔠ࡢ⤌ᡂ} Si Ca RE RE-Ca-Si 46.4 8.6 31.7 (mass%) ⾲_{2 Al-RE ྜ㔠ࡢ⤌ᡂ} No. Al Si Ca Ce La 1 Bal. 0.09 0.05 0.02 0.01 2 Bal. 1.58 0.37 0.37 0.17 3 Bal. 3.19 0.89 0.85 0.41 (mass%) 2.2 Al-RE ྜ㔠ࡢᣑᩓ᥋ྜ ⁐〇ࡋࡓ࢖ࣥࢦࢵࢺ࠿ࡽ᪕┙ຍᕤ࡟ࡼࡾ┤ᚄ ₁₀ mm ࡢ෇ᰕࢆస〇ࡋࡓ㸬෇ᰕࡢ➃㠃ࢆ᥋ྜ㠃࡜ࡋ࡚ 6 m ࡢࣂࣇ◊☻࡟ࡼࡾ㙾㠃௙ୖࡆࡋ㸪࢚ࢱࣀ࣮ࣝ୰ ࡛_{5 ศ㛫㉸㡢ἼὙίࡋࡓᚋ㸪ᣑᩓ᥋ྜ࡟౪ࡋࡓ㸬ᣑ} ᩓ᥋ྜࡢ┦ᡭᮦࡣ୍⯡ᵓ㐀⏝ᅽᘏ㗰ᮦ㸦_SS400㸧࡜ ࡋ㸪໬Ꮫ⤌ᡂࢆ⾲_{3 ࡟♧ࡋࡓ㸬SS400 ᥋ྜ㠃ࡢ௙ୖ} ࡆࡣ_{Al-RE ྜ㔠࡜ྠᵝ࡜ࡋࡓ㸬ࡲࡓ㸪Si ࡀ᥋ྜᛶ࡟} ୚࠼ࡿᙳ㡪ࢆ⪃៖ࡋ_{Al-1.5mass%Si ࡜ SS400 ࡢ᥋ྜ} ⥅ᡭࡶస〇ࡋࡓ㸬 Al-RE ྜ㔠࡜ SS400 ࢆ✺ࡁྜࢃࡏ㸪᥋ྜ ᗘ 600Υ㸪 ᥋ྜᅽຊ1 MPa㸪᥋ྜ᫬㛫 1.8 ks㸪6.0×10-2 Pa ࡢ᮲௳ ࡛ᣑᩓ᥋ྜࡋࡓ㸬ࡲࡓ㸪᥋ྜᚋ㸪ヨᩱࢆ᥋ྜ ᗘ࡜ ྠ ᗘ࡛_{7.2 ks ಖᣢࡋࡓᚋ⇕ฎ⌮ヨᩱࢆస〇ࡋࡓ㸬} ⾲3 ᅽᘏ⏝㗰ᮦ SS400 ࡢ⤌ᡂ Fe C Si Mn P S SS400 Bal. 0.09 0.11 0.45 0.22 0.38 (mass%) స〇ࡋࡓ_{Al-RE ྜ㔠࠾ࡼࡧᣑᩓ᥋ྜヨᩱ࡟ᑐࡋ࡚㸪} ගᏛ㢧ᚤ㙾࡟ࡼࡿ⤌⧊ほᐹ㸪㹖⥺ᅇᢡ࡟ࡼࡿᙧᡂ≀ ㉁ྠᐃ㸪_{EPMA ࡟ࡼࡿඖ⣲ศᕸㄪᰝࢆ⾜ࡗࡓ㸬} 3 ᐇ㦂⤖ᯝ 3.1 Al-RE ྜ㔠ࡢホ౯ ᅗ_{1 ࡟⁐〇ࡋࡓྛ Al-RE ྜ㔠ࡢ⤌⧊෗┿ࢆ♧ࡍ㸬} ࡑࢀࡒࢀࡢྜ㔠࡟ࡣ኱ࡁࡃศ㢮ࡋ࡚㸪ᚤ⣽࡞㔪≧ᯒ ฟ≀࡜⢒኱࡞Წ≧࣭ゅ≧ࡢᯒฟ≀ࡀ☜ㄆࡉࢀ㸪_RE ࡢྵ᭷㔞ࡀቑຍࡍࡿ࡟ࡋࡓࡀ࠸ᯒฟ≀ࡢࢧ࢖ࢬࡣ኱ ࡁࡃ࡞ࡗࡓ㸬 ᅗ_{1 Al-RE ྜ㔠ࡢᚤ⣽ᵓ㐀ほᐹ⤖ᯝ} ᅗ _{2 ࡟ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧ࡢ} EPMA 㠃ศᯒ⤖ᯝࢆ♧ࡍ㸬ᅗ 2 ࡟㓟⣲ࡢඖ⣲ศᕸࡣ ♧ࡋ࡚࠸࡞࠸ࡀ㸪ࡍ࡭࡚ࡢ_{Al-RE ྜ㔠࡛㓟⣲ࡢ⃰໬} 㒊ࡣㄆࡵࡽࢀࡎ㸪ほᐹࡉࢀࡓᯒฟ≀࡟㓟໬≀ࡣᏑᅾ ࡋ࡞࠿ࡗࡓ㸬ࡇࢀࡣ㸪㓟໬≀ࡀ_{Al-RE ྜ㔠ࢆ⁐〇ࡋ} ࡓ㝿࡟ᾋୖ࣭㝖ཤࡉࢀࡿࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪 ୍㒊࡟_{Fe ࡢ⃰໬ࡀㄆࡵࡽࢀࡓ㸬}

ᯒฟ≀ࡣ୺࡟Al, Si, Ca, Ce ࡛ᙧᡂࡉࢀ࡚࠸ࡿࡀ㸪

⣽࠿࡞㔪≧ࡢᯒฟ≀࡛ࡣCe ⃰ᗘࡀ㧗ࡃ Ca ࡯࡜ࢇ࡝

஧ඖ⣔≧ែᅗ(5)_{࡟࠾࠸࡚ྛඖ⣲ࡢ⃰ᗘẚࢆ⪃៖ࡍ}

ࡀ࠶ࡿ໬ྜ≀ࡣ_Al₁₁_Ce₃㸪_Al₄_Ca㸪Ca₂_{Si㸪CaSi㸪CaSi}₂ ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛㸪_{NaOH ࡟ࡼࡗ࡚ Al-RE} ᐊᕤ኱⣖せ➨_{63 ྕ㸦2013㸧 45㹼48}

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ྜ㔠ࡢ࢔࣑ࣝࢽ࣒࢘ࢆ⁐ゎࡋ㸪ṧ´⢊ᮎࡢ㹖⥺ᅇᢡ ࢆ⾜ࡗࡓ㸬 ᐃࡉࢀࡓᅇᢡࣆ࣮ࢡ㸦ᅗ _{3㸧࠿ࡽ๓㏙} ࡢ஧ඖ⣔໬ྜ≀ࡣྠᐃࡉࢀࡎ㸪ẚ㍑ⓗ㏆࠸ࣃࢱ࣮ࣥ ࢆ♧ࡋࡓ_CaAlSi2ࡸCaAl2Si1.5࡟ࡘ࠸࡚ࡶ୙୍⮴ࡢ㒊 ศࡀ࠶ࡾ㸪஧ඖ⣔㸪୕ඖ⣔ࡢ໬ྜ≀ࡀ」ᩘ✀Ꮡᅾࡋ ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪_{Al-Si-Ce ࡢ୕ඖ⣔≧ែ} ᅗ(6)_{࠿ࡽ㸪ᮏᐇ㦂ࡢ}_{Al-RE ྜ㔠⁐〇 ᗘ࡟࠾ࡅࡿᏑ} ᅾ┦ࡣ_{(Al)㸩(Si)㸩AlCeSi}2࡛࠶ࡿࡇ࡜࠿ࡽ㸪CaAlSi2 ࡢ_{Ca ࡢ୍㒊ࡀ Ce ࡟⨨᥮ࡉࢀࡓ໬ྜ≀ࡀᏑᅾࡍࡿྍ} ⬟ᛶࡀ⪃࠼ࡽࢀࡿ㸬 ᅗ_{3 NaOH ᾐฟṧ´ࡢ XRD ᅇᢡࣃࢱ࣮ࣥ} 3.2 Al-RE ྜ㔠࡜㕲㗰ᮦᩱࡢᣑᩓ᥋ྜ Al-RE ྜ㔠 No.3㸦0.85%Ce-0.41%La㸧㸭SS400 ⥅ ᡭࡢ᥋ྜ⏺㠃㏆ഐࡢගᏛ㢧ᚤ㙾෗┿ࢆᅗ4 ࡟♧ࡍ㸬 ᥋ྜ⏺㠃࡟㔠ᒓ㛫໬ྜ≀࡜⪃࠼ࡽࢀࡿᯒฟ≀ᒙࡀ⏕ ࡌ㸪ᚋ⇕ฎ⌮᫬㛫7.2 ks ࡛ࡣᯒฟ≀ᒙࡣ 100 m ⛬ᗘ ࡲ࡛ᡂ㛗ࡋ㸪_{Al-RE ྜ㔠୰ࡢᯒฟ≀ࡣ⢒኱໬ࡋࡓ㸬} Al-0.85%Ce-0.41%La㸭SS400㸦ᚋ⇕ฎ⌮ 7.2 ks㸧࡜ Al-1.5mass%Si㸭SS400㸦ᚋ⇕ฎ⌮ 3.6 ks㸧ࡢ᥋ྜ⏺㠃㏆ഐࡢEPMA ศᯒ⤖ᯝࢆᅗ 5 ࡟♧ࡍ㸬ࡓࡔࡋ㸪ᅗ 5(a) ࡟ࡣほᐹヨᩱస〇᫬࡟ᙧᡂࡋࡓ๭ࢀࡀヨᩱ୰ኸ㒊࡟ Ꮡᅾࡋ࡚࠸ࡿ㸬ᅗ5(a)㸪(b)ࡢ࠸ࡎࢀࡢሙྜࡶ᥋ྜ⏺ 㠃࡟_{Al-Fe ⣔㔠ᒓ㛫໬ྜ≀ࡢᙧᡂࡀ☜ㄆࡉࢀࡓ㸬໬} ྜ≀ᒙෆ࡟Al ࠾ࡼࡧ Fe ⃰ᗘࡢ⃰ῐࡀㄆࡵࡽࢀ㸪໬ ྜ≀ᒙ࡟ࡣ_{2 ┦ࡀඹᏑࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬㐣ཤ} ࡢሗ࿌(7)_{࡟ࡼࡿ࡜࢔࣑ࣝࢽ࣒࢘ྜ㔠࡜㗰ࡢ᥋ྜ࡟࠾} ࠸࡚_{Fe ഃẕᮦ࠿ࡽ㡰࡟ Fe}₂_Al₅㸪_FeAl₃ࡀᙧᡂࡉࢀࡿ ࡜ሗ࿌ࡉࢀ࡚࠸ࡿ㸬ᮏ◊✲࡟࠾࠸࡚᥋ྜヨᩱࡢ◚᩿ 㠃࡟࠾ࡅࡿ㹖⥺ᅇᢡ࠿ࡽ☜ㄆ࡛ࡁࡓࡢࡣ_Fe₂_Al₅ࡢࡳ ࡛࠶ࡗࡓࡀ㸪㐣ཤࡢሗ࿌࡜ྠᵝ࡟_Fe2Al5㸪FeAl3ࡀᏑ ᅾࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ᅗ _{5(a)࡜ 5(b)࡛ࡣᚋ⇕ฎ} ⌮᫬㛫ࡀ␗࡞ࡿࡓࡵ༢⣧࡟ẚ㍑ࡍࡿࡇ࡜ࡣ࡛ࡁ࡞࠸ ࡀ㸪໬ྜ≀ࡢᡂ㛗ࡀᣑᩓᚊ㏿࡟ࡼࡾ᫬㛫ࡢᖹ᪉᰿࡟ ẚ౛ࡍࡿ࡜⪃࠼ࡿ࡜㸪ᅗ_{5(b)࡛ほᐹࡉࢀࡓ໬ྜ≀ᒙ} ࡢ᪉ࡀࠊࡼࡾᆒ୍࡛ཌࡃᡂ㛗ࡋ࡚࠸ࡿ㸬ᅗ_5(b)ࡢ Al-RE ྜ㔠ࡢሙྜࡣ Al-Fe ⣔㔠ᒓ㛫໬ྜ≀┦୰࡟ Si ࡢṧ␃ࡀㄆࡵࡽࢀࡓࡀ_{Ce㸪La ࡣ☜ㄆ࡛ࡁ࡞࠿ࡗࡓ㸬} ᅗ _{4 Al-RE ྜ㔠 / SS400 ᥋ྜ⏺㠃ࡢගᏛ㢧} ᚤ㙾෗┿

㸦Post-bond heat treatment time=7.2 ks㸧

(a) Al-1.5mass%Si / SS400 (b) Al-0.85%Ce-0.41%La / SS400 ᅗ 5 ᥋ྜ⏺㠃㏆ഐࡢ EPMA ほᐹ⤖ᯝ 3.3 ⪃ᐹ ๓㏙ࡋࡓࡼ࠺࡟㸪ࢁ࠺ᮦ࡟ᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍ ࡣࢁ࠺᥋ᛶࢆྥୖࡉࡏࡿຠᯝࡀ࠶ࡿ㸬ࡇࢀࡣࠊᕼᅵ 㢮ඖ⣲ࡀ࢔࣑ࣝࢽ࣒࢘⾲㠃ࡢ㓟໬≀ᒙࢆ㑏ඖࡍࡿࡇ アルミニウム合金の拡散接合における希土類元素添加の影響

(5)

－　48　－ ⏣‮ၿ❶

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࡜࡟ࡼࡿࡠࢀᛶྥୖࡸ㸪ࢁ࠺ᮦࡀจᅛࡍࡿ㝿ࡢ⤖ᬗ ⢏ᚤ⣽໬ຠᯝ࡞࡝࡟ࡼࡿ࡜ࡉࢀ࡚࠸ࡿ(2)-(4)_㸬୍᪉ẕ ᮦ࡟㓟໬≀ᙧᡂഴྥࡢ㧗࠸ඖ⣲ࢆῧຍࡍࡿ౛࡜ࡋ࡚ ࡣ࣐ࢢࢿࢩ࣒࢘ࡀᣲࡆࡽࢀࡿ(1)_{㸬ࡇࡢሙྜࡢ᥋ྜᛶ} ྥୖࡣ㸪_{Mg ῧຍ࡟ࡼࡾ࢔࣑ࣝࢽ࣒࢘⾲㠃㓟໬≀ࡢ} ⤌ᡂࡀኚ໬ࡍࡿ㸦_Al2O3ЍMgAl2O4㸧࠾ࡼࡧᙧ≧ࡢኚ ໬㸦ᯒฟࡋࡓ_MgAl₂_O₄ࡸ _{MgO ࡟ࡼࡿ Al}₂_O₃ᒙࡢ୙ 㐃⥆໬࡟ࡼࡿᣑᩓࣃࢫࡢᙧᡂ㸧࡜࠸ࢃࢀ࡚࠸ࡿ㸬ᮏ ◊✲࡛ᑐ㇟࡜ࡋࡓᕼᅵ㢮ඖ⣲ࡢ࠺ࡕ౛࠼ࡤ _{Ce ࡟ᑐ} ࡋ࡚㸪 Al2O3㸩2CeЍ2Al㸩Ce2O3 Ǽ_{G=-145 kJ㸦at 873.15K㸧} ࡜_{Mg ࡜ྠᵝࡢຠᯝࡀᮇᚅ࡛ࡁࡿ㸬ᮏ◊✲ࡢሙྜ㸪} ᕼᅵ㢮ඖ⣲ࡣࢣ࢖໬≀࠶ࡿ࠸ࡣ࢝ࣝࢩ࣒࢘ࢣ࢖໬≀ ࡜ࡋ࡚Ꮡᅾࡋ࡚࠸ࡿࡓࡵ㸪ࡑࡢຠᯝࡣ㝈ᐃⓗ࡛࠶ࡿ ࡜⪃࠼ࡽࢀࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ᅗ_{5 ࡟࠾࠸࡚㔠ᒓ㛫} ໬ྜ≀ᒙࡢཌࡉࡀቑ኱ࡋ㸪ᒙ୰࡟ᕼᅵ㢮ඖ⣲ࡀ☜ㄆ ࡉࢀ࡞࠸ࡇ࡜࠿ࡽ᥋ྜ ᗘ࡟࠾࠸࡚ᕼᅵ㢮ඖ⣲ࡀఱ ࡽ࠿ࡢᙺ๭ࢆᯝࡓࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬 ୍᪉㸪࢔࣑ࣝࢽ࣒࢘୰ࡢ_{Si ࡢᙳ㡪࡟ࡘ࠸࡚ࡣ㸪᥋} ྜึᮇ࡟࠾࠸࡚ࡣ_{Al-Fe ⣔㔠ᒓ㛫໬ྜ≀ࡢᙧᡂࢆᢚ} ไࡋ㸪_{Si 㔞ࡢቑຍ࡜ඹ࡟ప ࡛ࡣ཯ᛂᒙᡂ㛗ࡢάᛶ} ໬࢚ࢿࣝࢠ࣮ࡀᑠࡉࡃ࡞ࡾ㸪㧗 ࡛ࡣ኱ࡁࡃ࡞ࡿ(7) ࡜࠸ࢃࢀ࡚࠸ࡿ㸬ᮏ◊✲࡟࠾࠸࡚ᅗ_{5(a)࡜(b)࡛ࡣ㸪} (b)ࡢ Al-RE ྜ㔠ࡢ᪉ࡀ 3.19mass%࡜ Si ⃰ᗘࡀ㧗ࡃ㸪 ᥋ྜ ᗘ _{600Υࡣ࢔࣑ࣝࢽ࣒࢘ྜ㔠࡟࡜ࡗ࡚ࡣ㧗} ࡛࠶ࡿࡓࡵ_{Al-RE ྜ㔠࡟࠾࠸࡚໬ྜ≀┦ᡂ㛗ࡀᢚไ} ࡉࢀࡿࡣࡎ࡛࠶ࡿ㸬ࡲࡓ㸪_{Si ⃰ᗘࡀ㧗࠸ሙྜ࡟ Si} ࡀᒁᡤⓗ࡟㧗⃰ᗘ࡜࡞ࡾ㸪୍᫬ⓗ࡟ᾮ┦ࢆ⏕ࡌࡓ⤖ ᯝ࡜ࡋ࡚໬ྜ≀┦ࡀᡂ㛗ࡍࡿྍ⬟ᛶࡶ࠶ࡿࡀ㸪ᮏ◊ ✲࡟࠾࠸࡚ᾮ┦ࡀⓎ⏕ࡋࡓ඙ೃࡣㄆࡵࡽࢀ࡞࠿ࡗࡓ㸬 ᮏ◊✲࡟࠾࠸࡚ࡣᏳ౯࡛ධᡭࡋࡸࡍ࠸⌫≧㯮㖄㗪㕲 ⏝ῧຍ๣ࢆᕼᅵ㢮ඖ⣲ࡢ౪⤥※࡜ࡋ࡚౑⏝ࡋࡓࡓࡵ㸪 Ca ࡀᏑᅾࡋࡓࡇ࡜࠾ࡼࡧ Ce ࡜ La ௨እࡢᕼᅵ㢮ඖ⣲ ࡀ」ᩘ✀Ꮡᅾࡋ࡚࠸ࡓྍ⬟ᛶࡀ࠶ࡿࡇ࡜࠿ࡽ㸪ᕼᅵ 㢮ඖ⣲ࡢᙳ㡪ࢆ᫂☜࡟ࡍࡿ࡟⮳ࡽ࡞࠿ࡗࡓឤࡣྰࡵ ࡞࠸㸬ᕼᅵ㢮ඖ⣲ࡢ౪⤥※࡜ࡋ࡚⣧≀㉁ࢆ౑⏝ࡍࡿ ࡇ࡜࡟ࡼࡗ࡚ᕼᅵ㢮ඖ⣲ࡢᙳ㡪ࢆࡼࡾ᫂☜࡟ࡍࡿࡇ ࡜ࡀྍ⬟࡜࡞ࡿ࡜⪃࠼ࡽࢀࡿ㸬 4 ⤖ゝ ᮏ◊✲࡛ࡣᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍࡋࡓ_{Al-RE ྜ㔠} ࢆ⁐〇ࡋ㸪SS400 ࡜ᣑᩓ᥋ྜࢆ⾜࠺ࡇ࡜࡛ Al-Fe ⣔ 㔠ᒓ㛫໬ྜ≀࡟ᑐࡋᕼᅵ㢮ඖ⣲ࡀ࡝ࡢࡼ࠺࡟ᙳ㡪ࡍ ࡿࡢ࠿ㄪᰝࡋࡓ㸬ࡇࢀࡽࡢᐇ㦂࠿ࡽᚓࡽࢀࡓ▱ぢࢆ ௨ୗ࡟♧ࡍ㸬 ࣭ᮏᐇ㦂࡛⁐〇ࡋࡓAl-RE ྜ㔠࡟ࡣ㔪≧㸪Წ≧࣭ゅ

≧ࡢ_{2 ✀㢮࡛ᯒฟ≀ࡀᏑᅾࡋ㸪࠸ࡎࢀࡶ Al, Si, Ca,}

Ce ࠿ࡽᡂࡿ໬ྜ≀࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࡀ㸪᫂☜࡞ ྠᐃ࡟ࡣ⮳ࡽ࡞࠿ࡗࡓ㸬ࡲࡓ㸪㓟໬≀ࡣ☜ㄆࡉࢀ ࡞࠿ࡗࡓ㸬 ࣭࢔࣑ࣝࢽ࣒࢘ྜ㔠࡜ _{SS400 ࡢ᥋ྜ⏺㠃࡟ࡣ FeAl}₃ ࡜Fe2Al5ࡢ2 ┦ࡢ㔠ᒓ㛫໬ྜ≀ᒙࡀᙧᡂࡉࡓ࡜⪃ ࠼ࡽࢀ㸪_{Al-RE ྜ㔠ࡢሙྜ㸪໬ྜ≀ᒙࡣࡼࡾཌࡃ} ᙧᡂࡉࢀࡓࡇ࡜࠿ࡽ㸪㔠ᒓ㛫໬ྜ≀ᒙࡢᙧᡂ࡟ᕼ ᅵ㢮ඖ⣲࠶ࡿ࠸ࡣ _{Si ࡀᙳ㡪ࢆ୚࠼࡚࠸ࡿ࡜⪃࠼} ࡽࢀࡿ㸬 ཧ⪃ᩥ⊩ (1) ᑠ㇂_{ၨᏊ, ụෆ ᘓ஧, ᯇ⏣ ⚟ஂ, ➨ 36 ᅇ⏺㠃᥋ྜ} ጤဨ఍㈨ᩱ _{IJ-9-94, ⁐᥋Ꮫ఍, ⏺㠃᥋ྜ◊✲ጤဨ఍,} 1994.

(2) Shaohong Wang, Heping Zhoua, Yuping Kang, The

influence of rare earth elements on microstructures and properties of 6061 aluminum alloy vacuum-brazed joints, J. Alloys Compd., 352 (2003) p79 - 83.

(3) Guowei Zhang, Yefeng Bao, Yongfeng Jiang, and Hong Zhu, Microstructure and Mechanical properties of 6063 aluminum alloy brazed joints with Al-Si-Cu-Ni-RE filler metal, J. Mater. Eng. Perform., 20-8 (2011) p1451 - 1456.

(4) Fei Yan, Daorong Xu, S.C. Wu, Qinde Sun, Chunming Wang, and Yajun Wang, Microstructure and phase constitution near the interface of Cu/3003 torch brazing using Al-Si-La-Sr filler, Journal of Mechanical Science and Technology, 26-12 (2012) p4089 - 4096.

(5) 㔠ᒓࢹ࣮ࢱࣈࢵࢡ_{: ᪥ᮏ㔠ᒓᕤᏛ఍⦅, 1993.}

(6) V. Raghavan, Journal of Phase Equilibria and Diffusion,

28-5 (2007) 456 - 458. (7) ᱵୗ_{ⱥᏕ, ᘅ℩ ᫂ኵ, ᑠᯘ ⣫஧㑻, ௒ᯞ ⿱㈗, ⁐} ᥋Ꮫ఍඲ᅜ኱఍ㅮ₇ᴫせ㸪_{81 (2007) 220 -221.} ⏣‮ၿ❶

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࡜࡟ࡼࡿࡠࢀᛶྥୖࡸ㸪ࢁ࠺ᮦࡀจᅛࡍࡿ㝿ࡢ⤖ᬗ ⢏ᚤ⣽໬ຠᯝ࡞࡝࡟ࡼࡿ࡜ࡉࢀ࡚࠸ࡿ(2)-(4)_㸬୍᪉ẕ ᮦ࡟㓟໬≀ᙧᡂഴྥࡢ㧗࠸ඖ⣲ࢆῧຍࡍࡿ౛࡜ࡋ࡚ ࡣ࣐ࢢࢿࢩ࣒࢘ࡀᣲࡆࡽࢀࡿ(1)_{㸬ࡇࡢሙྜࡢ᥋ྜᛶ} ྥୖࡣ㸪Mg ῧຍ࡟ࡼࡾ࢔࣑ࣝࢽ࣒࢘⾲㠃㓟໬≀ࡢ ⤌ᡂࡀኚ໬ࡍࡿ㸦_Al₂_O₃Ѝ_MgAl₂_O₄㸧࠾ࡼࡧᙧ≧ࡢኚ ໬㸦ᯒฟࡋࡓMgAl2O4ࡸ MgO ࡟ࡼࡿ Al2O3ᒙࡢ୙ 㐃⥆໬࡟ࡼࡿᣑᩓࣃࢫࡢᙧᡂ㸧࡜࠸ࢃࢀ࡚࠸ࡿ㸬ᮏ ◊✲࡛ᑐ㇟࡜ࡋࡓᕼᅵ㢮ඖ⣲ࡢ࠺ࡕ౛࠼ࡤ Ce ࡟ᑐ ࡋ࡚㸪 Al2O3㸩2CeЍ2Al㸩Ce2O3 Ǽ_{G=-145 kJ㸦at 873.15K㸧} ࡜Mg ࡜ྠᵝࡢຠᯝࡀᮇᚅ࡛ࡁࡿ㸬ᮏ◊✲ࡢሙྜ㸪 ᕼᅵ㢮ඖ⣲ࡣࢣ࢖໬≀࠶ࡿ࠸ࡣ࢝ࣝࢩ࣒࢘ࢣ࢖໬≀ ࡜ࡋ࡚Ꮡᅾࡋ࡚࠸ࡿࡓࡵ㸪ࡑࡢຠᯝࡣ㝈ᐃⓗ࡛࠶ࡿ ࡜⪃࠼ࡽࢀࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ᅗ_{5 ࡟࠾࠸࡚㔠ᒓ㛫} ໬ྜ≀ᒙࡢཌࡉࡀቑ኱ࡋ㸪ᒙ୰࡟ᕼᅵ㢮ඖ⣲ࡀ☜ㄆ ࡉࢀ࡞࠸ࡇ࡜࠿ࡽ᥋ྜ ᗘ࡟࠾࠸࡚ᕼᅵ㢮ඖ⣲ࡀఱ ࡽ࠿ࡢᙺ๭ࢆᯝࡓࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬 ୍᪉㸪࢔࣑ࣝࢽ࣒࢘୰ࡢ_{Si ࡢᙳ㡪࡟ࡘ࠸࡚ࡣ㸪᥋} ྜึᮇ࡟࠾࠸࡚ࡣAl-Fe ⣔㔠ᒓ㛫໬ྜ≀ࡢᙧᡂࢆᢚ ไࡋ㸪_{Si 㔞ࡢቑຍ࡜ඹ࡟ప ࡛ࡣ཯ᛂᒙᡂ㛗ࡢάᛶ} ໬࢚ࢿࣝࢠ࣮ࡀᑠࡉࡃ࡞ࡾ㸪㧗 ࡛ࡣ኱ࡁࡃ࡞ࡿ(7) ࡜࠸ࢃࢀ࡚࠸ࡿ㸬ᮏ◊✲࡟࠾࠸࡚ᅗ_{5(a)࡜(b)࡛ࡣ㸪} (b)ࡢ Al-RE ྜ㔠ࡢ᪉ࡀ 3.19mass%࡜ Si ⃰ᗘࡀ㧗ࡃ㸪 ᥋ྜ ᗘ _{600Υࡣ࢔࣑ࣝࢽ࣒࢘ྜ㔠࡟࡜ࡗ࡚ࡣ㧗} ࡛࠶ࡿࡓࡵAl-RE ྜ㔠࡟࠾࠸࡚໬ྜ≀┦ᡂ㛗ࡀᢚไ ࡉࢀࡿࡣࡎ࡛࠶ࡿ㸬ࡲࡓ㸪_{Si ⃰ᗘࡀ㧗࠸ሙྜ࡟ Si} ࡀᒁᡤⓗ࡟㧗⃰ᗘ࡜࡞ࡾ㸪୍᫬ⓗ࡟ᾮ┦ࢆ⏕ࡌࡓ⤖ ᯝ࡜ࡋ࡚໬ྜ≀┦ࡀᡂ㛗ࡍࡿྍ⬟ᛶࡶ࠶ࡿࡀ㸪ᮏ◊ ✲࡟࠾࠸࡚ᾮ┦ࡀⓎ⏕ࡋࡓ඙ೃࡣㄆࡵࡽࢀ࡞࠿ࡗࡓ㸬 ᮏ◊✲࡟࠾࠸࡚ࡣᏳ౯࡛ධᡭࡋࡸࡍ࠸⌫≧㯮㖄㗪㕲 ⏝ῧຍ๣ࢆᕼᅵ㢮ඖ⣲ࡢ౪⤥※࡜ࡋ࡚౑⏝ࡋࡓࡓࡵ㸪 Ca ࡀᏑᅾࡋࡓࡇ࡜࠾ࡼࡧ Ce ࡜ La ௨እࡢᕼᅵ㢮ඖ⣲ ࡀ」ᩘ✀Ꮡᅾࡋ࡚࠸ࡓྍ⬟ᛶࡀ࠶ࡿࡇ࡜࠿ࡽ㸪ᕼᅵ 㢮ඖ⣲ࡢᙳ㡪ࢆ᫂☜࡟ࡍࡿ࡟⮳ࡽ࡞࠿ࡗࡓឤࡣྰࡵ ࡞࠸㸬ᕼᅵ㢮ඖ⣲ࡢ౪⤥※࡜ࡋ࡚⣧≀㉁ࢆ౑⏝ࡍࡿ ࡇ࡜࡟ࡼࡗ࡚ᕼᅵ㢮ඖ⣲ࡢᙳ㡪ࢆࡼࡾ᫂☜࡟ࡍࡿࡇ ࡜ࡀྍ⬟࡜࡞ࡿ࡜⪃࠼ࡽࢀࡿ㸬 4 ⤖ゝ ᮏ◊✲࡛ࡣᕼᅵ㢮ඖ⣲ࢆᚤ㔞ῧຍࡋࡓ_{Al-RE ྜ㔠} ࢆ⁐〇ࡋ㸪_{SS400 ࡜ᣑᩓ᥋ྜࢆ⾜࠺ࡇ࡜࡛ Al-Fe ⣔} 㔠ᒓ㛫໬ྜ≀࡟ᑐࡋᕼᅵ㢮ඖ⣲ࡀ࡝ࡢࡼ࠺࡟ᙳ㡪ࡍ ࡿࡢ࠿ㄪᰝࡋࡓ㸬ࡇࢀࡽࡢᐇ㦂࠿ࡽᚓࡽࢀࡓ▱ぢࢆ ௨ୗ࡟♧ࡍ㸬 ࣭ᮏᐇ㦂࡛⁐〇ࡋࡓ_{Al-RE ྜ㔠࡟ࡣ㔪≧㸪Წ≧࣭ゅ}

≧ࡢ_{2 ✀㢮࡛ᯒฟ≀ࡀᏑᅾࡋ㸪࠸ࡎࢀࡶ Al, Si, Ca,}

Ce ࠿ࡽᡂࡿ໬ྜ≀࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࡀ㸪᫂☜࡞ ྠᐃ࡟ࡣ⮳ࡽ࡞࠿ࡗࡓ㸬ࡲࡓ㸪㓟໬≀ࡣ☜ㄆࡉࢀ ࡞࠿ࡗࡓ㸬 ࣭࢔࣑ࣝࢽ࣒࢘ྜ㔠࡜ _{SS400 ࡢ᥋ྜ⏺㠃࡟ࡣ FeAl}₃ ࡜_Fe2Al5ࡢ2 ┦ࡢ㔠ᒓ㛫໬ྜ≀ᒙࡀᙧᡂࡉࡓ࡜⪃ ࠼ࡽࢀ㸪_{Al-RE ྜ㔠ࡢሙྜ㸪໬ྜ≀ᒙࡣࡼࡾཌࡃ} ᙧᡂࡉࢀࡓࡇ࡜࠿ࡽ㸪㔠ᒓ㛫໬ྜ≀ᒙࡢᙧᡂ࡟ᕼ ᅵ㢮ඖ⣲࠶ࡿ࠸ࡣ _{Si ࡀᙳ㡪ࢆ୚࠼࡚࠸ࡿ࡜⪃࠼} ࡽࢀࡿ㸬 ཧ⪃ᩥ⊩ (1) ᑠ㇂_{ၨᏊ, ụෆ ᘓ஧, ᯇ⏣ ⚟ஂ, ➨ 36 ᅇ⏺㠃᥋ྜ} ጤဨ఍㈨ᩱ _{IJ-9-94, ⁐᥋Ꮫ఍, ⏺㠃᥋ྜ◊✲ጤဨ఍,} 1994.

(2) Shaohong Wang, Heping Zhoua, Yuping Kang, The

influence of rare earth elements on microstructures and properties of 6061 aluminum alloy vacuum-brazed joints, J. Alloys Compd., 352 (2003) p79 - 83.

(3) Guowei Zhang, Yefeng Bao, Yongfeng Jiang, and Hong Zhu, Microstructure and Mechanical properties of 6063 aluminum alloy brazed joints with Al-Si-Cu-Ni-RE filler metal, J. Mater. Eng. Perform., 20-8 (2011) p1451 - 1456.

(4) Fei Yan, Daorong Xu, S.C. Wu, Qinde Sun, Chunming Wang, and Yajun Wang, Microstructure and phase constitution near the interface of Cu/3003 torch brazing using Al-Si-La-Sr filler, Journal of Mechanical Science and Technology, 26-12 (2012) p4089 - 4096.

(5) 㔠ᒓࢹ࣮ࢱࣈࢵࢡ_{: ᪥ᮏ㔠ᒓᕤᏛ఍⦅, 1993.}

(6) V. Raghavan, Journal of Phase Equilibria and Diffusion,

28-5 (2007) 456 - 458. (7) ᱵୗ_{ⱥᏕ, ᘅ℩ ᫂ኵ, ᑠᯘ ⣫஧㑻, ௒ᯞ ⿱㈗, ⁐} ᥋Ꮫ఍඲ᅜ኱఍ㅮ₇ᴫせ㸪81 (2007) 220 -221. ᐊᕤ኱⣖せ➨ ྕ㸦㸧㹼

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ࣄࢢ࣐ࢆࡵࡄࡿᮐᖠᕷẸࡢព㆑࡜⾜ື

ட⏣ ṇே

*

Residents’ Attitudes and Behaviors

Toward Brown Bears in Sapporo

Masato KAMEDA

*

(ཎ✏ཷ௜᪥ ᖹᡂ 25 ᖺ 6 ᭶ 28 ᪥ ㄽᩥཷ⌮᪥ ᖹᡂ 26 ᖺ 1 ᭶ 24 ᪥㸧

Abstract

The goal of this study is to provide basic information on the attitudes and behaviors of residents in Sapporo toward brown bears (Ursus arctos) and bear management and, by doing so, to contribute to more informed management and policy decisions. The author conducted a mail survey among the residents of Sapporo living near the points where bears or their signs were reported in 2010 or 2011. The result showed: (1) the level of acceptance of bears is as high as half in the sample, (2) mass media and neighborhood associations play important roles in dispersing information and knowledge about bears, (3) respondents want the municipal government to conduct a variety of activities, including bear habitat investigation and public education, and (4) farmers and orchard owners also want more direct measures to avoid product losses.

Keywords: brown bear, human dimensions of wildlife, public attitude, mail survey, Sapporo

1 ┠ⓗ ᮏ◊✲ࡣࠊᮐᖠᕷෆࡢࣄࢢ࣐ฟἐᆅ࡟ఫࡴఫẸ ࡢࣄࢢ࣐࡜ࣄࢢ࣐ᑐ⟇࡟㛵ࡍࡿព㆑࡜⾜ືࢆᢕᥱ ࡋࠊ௒ᚋࡢࣄࢢ࣐ಖㆤ⟶⌮ᨻ⟇࡟㈨ࡍࡿࡇ࡜ࢆ┠ ⓗ࡜ࡋ࡚࠸ࡿࠋᮏ✏ࡣࡑࡢࡓࡵ࡟⾜ࡗࡓ࢔ࣥࢣ࣮ ࢺㄪᰝࡢ⤖ᯝࢆሗ࿌ࡍࡿࡶࡢ࡛࠶ࡿࠋ ᮐᖠᕷࡣேཱྀ 190 ୓ࢆ᧦ࡍࡿ኱㒔ᕷ࡛࠶ࡿࡀࠊ ༡す㒊ࡢᒣᆅࢆ୰ᚰ࡟ᕷᇦ㠃✚ࡢ _{60㸣௨ୖࡀࣄࢢ} ࣐ࡢ᳇ࡴ᳃ᯘ࡟そࢃࢀࠊࡑࡇ࡟ᕷ⾤ᆅࡀධࡾ㎸ࢇ ࡛࠸ࡿࡓࡵࠊ௨๓࠿ࡽࣄࢢ࣐ࡢฟἐࢆ⤒㦂ࡋ࡚ࡁ ࡓࠋ≉࡟2011 ᖺ࡟ࡣࠊᕷẸ࠿ࡽᐤࡏࡽࢀࡓࣄࢢ࣐ ฟἐ᝟ሗࡀ_{254 ௳࡜ࠊ㐣ཤ 10 ᖺ㛫࡛᭱ከ࡜࡞ࡗࡓ} ࡔࡅ࡛࡞ࡃࠊࡇࢀࡲ࡛ᩘ༑ᖺ㛫ฟἐࡋࡓࡇ࡜ࡢ࡞ ࠸ᕷ⾤୰ᚰ㒊࡟ࡶฟἐࡀぢࡽࢀࡓ㸦ᅗ _{1㸧ࠋ࣐ࢫ࣓} ࢹ࢕࢔࡟ࡶ኱ࡁࡃ࡜ࡾୖࡆࡽࢀࠊᕷẸࡢ㛫࡟ືᦂ ࡀᗈࡀࡗࡓࠋே㌟஦ᨾࡣࡇࢀࡲ࡛ᕷ⾤ᆅ࡛ࡶ㎰ᆅ ࡛ࡶⓎ⏕ࡋ࡚࠸࡞࠸ࡀࠊ㎰ᆅ࡛ࡣ௨๓࠿ࡽస≀⿕ ᐖࡀⓎ⏕ࡋ࡚࠸ࡿࠋ ᮐᖠᕷࡀ࣊࢔ࢺࣛࢵࣉ㸦᭷่㕲⥺ࢆᙇࡾࠊࡑࢀ࡟ ᥋ゐࡋࡓື≀ࡢయẟࢆ᥇ྲྀࡍࡿ௙᥃ࡅ㸧➼࡟ࡼࡾ ᥇ྲྀࡋࡓయẟ࡞࡝ࡢヨᩱࢆ⏝࠸࡚⾜ࡗࡓ _{DNA ศ} ᯒࡢᬻᐃ⤖ᯝ࡟ࡼࢀࡤࠊ2011 ᖺ࡟⏕ᜥࡀ☜ㄆࡉࢀ ࡓࣄࢢ࣐ࡣ_{49 㢌࡟ࡢࡰࡿࠋࡘࡲࡾࡇࡢᖺ࡟ᮐᖠᕷ} ᇦෆ࡟⏕ᜥࡋ࡚࠸ࡓࣄࢢ࣐ࡣᑡ࡞ࡃ࡜ࡶ_{49 㢌࠸ࡓ} ࡇ࡜࡟࡞ࡿࠋ࡞࠾ࠊྠᖺ࡟㥑㝖ࡉࢀࡓࣄࢢ࣐ࡣࡑࡢ ࠺ࡕ_{7 㢌࡛࠶ࡗࡓ}(1)_ࠋ * ᐊ⹒ᕤᴗ኱Ꮫ ࡦ࡜ᩥ໬⣔㡿ᇦ

アルミニウム合金の拡散接合における希土類元素添加の影響

Muroran-IT Academic Resources Archive

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