CN114029651B - 含钛活性钎料及其制备方法和应用 - Google Patents
含钛活性钎料及其制备方法和应用 Download PDFInfo
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- 239000010936 titanium Substances 0.000 title claims abstract description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 28
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 36
- -1 titanium hydride Chemical compound 0.000 claims abstract description 26
- 239000011812 mixed powder Substances 0.000 claims abstract description 25
- 229910000048 titanium hydride Inorganic materials 0.000 claims abstract description 24
- 239000011888 foil Substances 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 238000005219 brazing Methods 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 229910052709 silver Inorganic materials 0.000 claims description 13
- 239000004332 silver Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000002490 spark plasma sintering Methods 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 229910052987 metal hydride Inorganic materials 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 238000000498 ball milling Methods 0.000 description 9
- 238000005097 cold rolling Methods 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 238000004321 preservation Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 5
- 239000011135 tin Substances 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 229910000833 kovar Inorganic materials 0.000 description 4
- GDYSHMYWZMUKNK-UHFFFAOYSA-N [In].[Ti].[Cu].[Ag] Chemical compound [In].[Ti].[Cu].[Ag] GDYSHMYWZMUKNK-UHFFFAOYSA-N 0.000 description 3
- HAGWIPLBDFOLMO-UHFFFAOYSA-N [Ni].[Ti].[Cu].[Sn] Chemical compound [Ni].[Ti].[Cu].[Sn] HAGWIPLBDFOLMO-UHFFFAOYSA-N 0.000 description 3
- AHGIVYNZKJCSBA-UHFFFAOYSA-N [Ti].[Ag].[Cu] Chemical compound [Ti].[Ag].[Cu] AHGIVYNZKJCSBA-UHFFFAOYSA-N 0.000 description 3
- KCGHDPMYVVPKGJ-UHFFFAOYSA-N [Ti].[Cu].[Sn] Chemical compound [Ti].[Cu].[Sn] KCGHDPMYVVPKGJ-UHFFFAOYSA-N 0.000 description 3
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 3
- PMRMTSSYYVAROU-UHFFFAOYSA-N [Ti].[Ni].[Au] Chemical compound [Ti].[Ni].[Au] PMRMTSSYYVAROU-UHFFFAOYSA-N 0.000 description 3
- WCERXPKXJMFQNQ-UHFFFAOYSA-N [Ti].[Ni].[Cu] Chemical compound [Ti].[Ni].[Cu] WCERXPKXJMFQNQ-UHFFFAOYSA-N 0.000 description 3
- IPBFMRYLKXNJSH-UHFFFAOYSA-N [Ti].[Sn].[Cu].[Ag] Chemical compound [Ti].[Sn].[Cu].[Ag] IPBFMRYLKXNJSH-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/001—Starting from powder comprising reducible metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1051—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by electric discharge
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
Abstract
本发明公开了含钛活性钎料及其制备方法和应用,解决了含钛活性钎料易氧化、难加工难题。本发明以氢化钛作为钛源,采用真空加压烧结将其他金属和氢化钛混合粉烧结成块体,再将块体轧制成箔带、拉拔成丝材或冲压成不同形状片材。本发明技术新颖,可制备高质量含钛活性钎料,满足半导体封装需求。用该钎料封装的半导体器件在轨道交通、智能电网、航空航天、电动汽车与新能源装备等领域有广阔应用前景。
Description
技术领域
本发明涉及含钛活性钎料及其制备方法和应用,属于半导体封装用活性钎料领域。
背景技术
随着半导体技术的快速发展,功率器件朝着高频率、高功率、高效率、高可靠以及小型化的方向发展。散热成为功率器件高性能、小型化的关键核心问题。IGBT(绝缘栅双极型晶体管)是最重要功率器件之一。IGBT是能源变换与传输的核心器件,俗称电力电子装置的“CPU”,作为国家战略性新兴产业,在轨道交通、智能电网、航空航天、电动汽车与新能源装备等领域应用极广。IGBT采用陶瓷覆铜基板散热,散热能力直接影响IGBT器件的性能。
高热导率陶瓷与金属(无氧铜)通过活性金属钎焊技术(Active Metal Brazing,AMB)连接。在银基钎料中添加活性元素Ti,Ti与陶瓷侧氧、氮等元素反应,实现陶瓷与金属连接。通过活性金属钎焊技术连接的陶瓷覆铜基板因结合强度高、散热性能好等优点备受关注,应用前景极为广阔。
Ti化学性质非常活泼,极易氧化,且易于与银、铜反应生成脆性金属间化合物,导致银基、铜基含钛钎料焊接性能下降,且加工变形能力差,极易断裂,较难加工成高质量箔带或片材。
发明内容
为了解决上述问题,本发明提供以氢化钛作为钛源,采用真空加压烧结将其他金属和氢化钛的混合粉体烧结成块体。烧结过程中,氢化钛缓慢分解,不仅生成高活性钛,而且提供了氢还原氛围抑制氧化,成功制备高质量含钛活性钎料。对半导体封装用含钛活性钎料的制备,本发明是重要技术革新。
含钛活性钎料制备方法,以氢化钛作为钛源,采用真空加压烧结将其他金属和氢化钛的混合粉体烧结成块体,再将块体轧制成箔带、拉拔成丝材或冲压成不同形状片材。
进一步地,在上述技术方案中,所述氢化钛粉体平均粒径为0.1-300 μm;优选0.1-100 μm;更优选0.1-30 μm。
进一步地,在上述技术方案中,所述加压烧结包括热压烧结和放电等离子烧结;烧结温度:600-900 ℃;烧结压强:30-70 MPa;烧结时间:5-180 min。
进一步地,在上述技术方案中,所述其他金属包括:金、锂、铝、铜、银、锡、铟、锌、镍、铬、镓、锆、钯、镧、铈中的一种或两种或多种;优选:金、铜、银、锡、铟、锌、镍、铬、镓、锆中的一种或两种或多种;更优选:金、铜、银、锡、铟中的一种或两种或多种。
进一步地,在上述技术方案中,所述轧制、拉拔或冲压变形后,致密度为90 %~100%。
进一步地,在上述技术方案中,氢化钛重量含量为混合粉体的0.1 %~70 %;优选0.1 %~30 %;更优选0.1 %~15 %。
其他金属组合优选银、铜、锡,重量含量优选占混合粉体银为30-70 %、铜为5-40%、锡为1-30 %。
本发明提供上述的方法得到的含钛活性钎料。
本发明提供上述含钛活性钎料在半导体封装领域的应用。
发明有益效果
本发明涉及含钛活性钎料及其制备方法和应用,是异质材料连接领域关键核心技术。本发明以氢化钛作为钛源,不仅解决了钛易氧化导致焊接性能下降难题,而且烧结时氢化钛缓慢分解,生成高活性钛且提供了氢还原氛围抑制氧化,解决了含钛活性钎料制备加工难题,成功制备高质量含钛活性钎料。
附图说明
图1是实施例1制备的银铜钛活性钎料样品;
图2是实施例1制备的银铜钛活性钎料金相照片;
图3是实施例1制备的蓝宝石和TC4合金钎焊组件。
具体实施方式
以下结合附图对本发明作进一步说明。以下实施例只是作为理解本发明用,并不限制本发明。
实施例1
1、将银粉、氢化钛粉、铜粉按照重量百分比64:1.75:34.25进行球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空热压烧结,烧结温度为750 ℃,压力为40 MPa,保温时间为60 min;得到银铜钛块体。
3、将银铜钛块体进行多道次冷轧,道次压下量为10 %,得到厚度为100 μm的箔材。
4、用银铜钛箔材真空钎焊蓝宝石和TC4合金,接头剪切强度为165 MPa。
实施例2
1、将铜粉、镍粉、锡粉、氢化钛粉按照重量百分比78:5:5.5:11.5球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空热压烧结,烧结温度为900 ℃,压力为45 MPa,保温时间为120 min;得到铜镍锡钛块体。
3、将铜镍锡钛块体进行多道次冷轧,道次压下量为5 %,得到厚度为100 μm的箔材。
4、用铜镍锡钛箔材真空钎焊氧化铝和Kovar合金,接头剪切强度为100 MPa。
实施例3
1、将银粉、氢化钛粉、铜粉、锡粉按照重量百分比62.5:1.5:34.1:1.9进行球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空放电等离子烧结(SPS),烧结温度为720 ℃,压力为30 MPa,保温时间为10 min;得到银铜锡钛块体。
3、将银铜锡钛块体进行多道次冷轧,道次压下量为15 %,得到厚度为120 μm的箔材。
4、用银铜锡钛箔材真空钎焊氮化铝和铜,接头剪切强度为152 MPa。
实施例4
1、将银粉、氢化钛粉、铜粉、铟粉按照重量百分比61.2:2:22.5:14.3进行球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空放电等离子烧结(SPS),烧结温度为650℃,压力为35 MPa,保温时间为20 min;得到银铜铟钛块体。
3、将银铜铟钛块体进行多道次冷轧,道次压下量为20 %,得到厚度为50 μm的箔材。
4、用银铜铟钛箔材真空钎焊氮化硅和铜,接头剪切强度为128 MPa。
实施例5
1、将金粉、氢化钛粉、镍粉按照重量百分比96:2.9:1.1进行球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空放电等离子烧结(SPS),烧结温度为850℃,压力为42 MPa,保温时间为15 min;得到金镍钛块体。
3、将金镍钛块体进行多道次冷轧,道次压下量为12 %,得到厚度为120 μm的箔材。
4、用金镍钛箔材真空钎焊氧化锆和Kovar 4J28合金,接头剪切强度为108 MPa。
实施例6
1、将氢化钛粉、镍粉按照重量百分比65:35进行球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空放电等离子烧结(SPS),烧结温度为820℃,压力为47 MPa,保温时间为18 min;得到钛镍块体。
3、将钛镍块体进行多道次冷轧,道次压下量为14 %,得到厚度为110 μm的箔材。
4、用钛镍箔材真空钎焊ZrCp-W复合材料和TZM合金,接头剪切强度为95 MPa。
实施例7
1、将氢化钛粉、镍粉、铜粉按照重量百分比72:15:13球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空热压烧结,烧结温度为880℃,压力为50 MPa,保温时间为160 min;得到钛镍铜块体。
3、将钛镍铜块体进行多道次冷轧,道次压下量为16 %,得到厚度为95 μm的箔材。
4、用钛镍铜箔材真空钎焊氧化铝和Kovar合金,接头剪切强度为88 MPa。
实施例8
1、将银粉、铜粉、铝粉、氢化钛粉按照重量百分比92:4.5:1.25:2.25球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空热压烧结,烧结温度为900 ℃,压力为60 MPa,保温时间为180 min;得到银铜铝钛块体。
3、将银铜铝钛块体进行多道次冷轧,道次压下量为18 %,得到厚度为70 μm的箔材。
4、用银铜铝钛箔材真空钎焊碳化硅和Kovar合金,接头剪切强度为95 MPa。
实施例9
1、将铜粉、锡粉、氢化钛粉按照重量百分比66:21:13球磨混料,得到混合粉。
2、将混合粉装入石墨模具进行真空热压烧结,烧结温度为840 ℃,压力为65 MPa,保温时间为150 min;得到铜锡钛块体。
3、将铜锡钛块体进行多道次冷轧,道次压下量为16 %,得到厚度为105 μm的箔材。
4、用铜锡钛箔材真空钎焊氧化铝和TC4合金,接头剪切强度为142 MPa。
Claims (4)
1.含钛活性钎料制备方法,其特征在于:
以氢化钛作为钛源,采用真空加压烧结将其他金属和氢化钛的混合粉体直接烧结成块体,烧结温度:600-900 ℃,烧结压强:30-70 MPa,烧结时间:5-180 min;再将块体轧制成箔带、拉拔成丝材或冲压成不同形状片材;所述其他金属为铜和银;或铜和银与锡、铟中的一种;氢化钛重量含量为混合粉体的0.1 %~70 %;
所述的含钛活性钎料应用于半导体封装领域。
2.根据权利要求1所述的方法,其特征在于:氢化钛粉体平均粒径为0.1-300 μm。
3.根据权利要求1所述的方法,其特征在于:加压烧结包括热压烧结和放电等离子烧结。
4.根据权利要求1~3任意一项所述的方法得到的含钛活性钎料。
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