兵器材料科学与工程
兵器材料科學與工程
병기재료과학여공정
Ordnance Material Science and Engineering
2013年
3期
14-16,17
,共4页
吕振林%张超%谢辉%贾磊%方佳%王红洁
呂振林%張超%謝輝%賈磊%方佳%王紅潔
려진림%장초%사휘%가뢰%방가%왕홍길
自蔓延高温合成%Ti3AlC2%显微组织%摩擦因数%磨损率
自蔓延高溫閤成%Ti3AlC2%顯微組織%摩抆因數%磨損率
자만연고온합성%Ti3AlC2%현미조직%마찰인수%마손솔
SHS%Ti3AlC2%microstructure%friction coefficient%wear rate
以TiC,Ti,Al,C粉末为反应物原料,采用自蔓延高温反应按照质量分数为15% TiC,50% Ti,28% Al,7% C的配比合成了纯度为96.76%、气孔率为9.45%的高纯Ti3AlC2块体材料。研究添加TiC对合成产物Ti3AlC2材料纯度的影响,并对其摩擦磨损性能进行分析。结果表明:当添加 TiC 的质量分数小于15%,Ti3AlC2含量随 TiC 含量的增加而增加;当添加TiC质量分数大于15%,Ti3AlC2含量随TiC含量的增加而降低。当载荷较小,Ti3AlC2材料以磨粒磨损为主;而载荷较大,其以磨粒磨损为主并伴随有轻微黏着磨损。
以TiC,Ti,Al,C粉末為反應物原料,採用自蔓延高溫反應按照質量分數為15% TiC,50% Ti,28% Al,7% C的配比閤成瞭純度為96.76%、氣孔率為9.45%的高純Ti3AlC2塊體材料。研究添加TiC對閤成產物Ti3AlC2材料純度的影響,併對其摩抆磨損性能進行分析。結果錶明:噹添加 TiC 的質量分數小于15%,Ti3AlC2含量隨 TiC 含量的增加而增加;噹添加TiC質量分數大于15%,Ti3AlC2含量隨TiC含量的增加而降低。噹載荷較小,Ti3AlC2材料以磨粒磨損為主;而載荷較大,其以磨粒磨損為主併伴隨有輕微黏著磨損。
이TiC,Ti,Al,C분말위반응물원료,채용자만연고온반응안조질량분수위15% TiC,50% Ti,28% Al,7% C적배비합성료순도위96.76%、기공솔위9.45%적고순Ti3AlC2괴체재료。연구첨가TiC대합성산물Ti3AlC2재료순도적영향,병대기마찰마손성능진행분석。결과표명:당첨가 TiC 적질량분수소우15%,Ti3AlC2함량수 TiC 함량적증가이증가;당첨가TiC질량분수대우15%,Ti3AlC2함량수TiC함량적증가이강저。당재하교소,Ti3AlC2재료이마립마손위주;이재하교대,기이마립마손위주병반수유경미점착마손。
High purity Ti3AlC2 was synthesized by self?propagating high?temperature synthesis method using TiC,Ti,Al and C powders as raw materials. Ti3AlC2 material with high density was successfully fabricated when the mass fraction of TiC/Ti/Al/C is equal to 15%/50%/28%/7%. The content of Ti3AlC2 in the material reaches as high as 96.76%,and the porosity is only 9.45%. The effects of TiC on the purity of sintered Ti3AlC2 were studied. When the addition content of TiC is less than 15%,Ti3AlC2 percentage content firstly increases with the increase of TiC content,but when the addition content of TiC is greater than 15%,it will decrease with continuously increasing amount of TiC. When the load is low,the main wear mechanism is abrasive wear. Under a higher load,the wear mechanism transforms to abrasive wear and light adhesive wear.