热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2010年
8期
97-99
,共3页
AZ31B%固相反应%超细粉体%陶瓷涂层%抗热震性
AZ31B%固相反應%超細粉體%陶瓷塗層%抗熱震性
AZ31B%고상반응%초세분체%도자도층%항열진성
AZ31B%solid state reaction%ultra-fine powder%ceramic coatings%thermal shock resistance
在镁合金AZ31B表面采用同相反应法制备了Al2O3基纳米复相陶瓷涂层,采用机械合金化(MA)制备了超细粉体,对粉体的相组成及粒度进行了测试,并用X射线衍射分析了涂层的相组成.结果表明,在MA后粉体的粒度接近纳米级;热固化后涂层中有Al2O3、TiB2、MgAl2O4、Zn6Al2O9和Ti3B4新相产生;涂层具有较好的抗热震性能,400℃耐热冲击达35次以上.
在鎂閤金AZ31B錶麵採用同相反應法製備瞭Al2O3基納米複相陶瓷塗層,採用機械閤金化(MA)製備瞭超細粉體,對粉體的相組成及粒度進行瞭測試,併用X射線衍射分析瞭塗層的相組成.結果錶明,在MA後粉體的粒度接近納米級;熱固化後塗層中有Al2O3、TiB2、MgAl2O4、Zn6Al2O9和Ti3B4新相產生;塗層具有較好的抗熱震性能,400℃耐熱遲擊達35次以上.
재미합금AZ31B표면채용동상반응법제비료Al2O3기납미복상도자도층,채용궤계합금화(MA)제비료초세분체,대분체적상조성급립도진행료측시,병용X사선연사분석료도층적상조성.결과표명,재MA후분체적립도접근납미급;열고화후도층중유Al2O3、TiB2、MgAl2O4、Zn6Al2O9화Ti3B4신상산생;도층구유교호적항열진성능,400℃내열충격체35차이상.
The Al2O3 based nano-meter composite ceramic coatings were prepared by solid state reaction method on the surface of AZ31B magnesium alloy.The ultra-fine powder was prepared by mechanical alloying(MA),the powders phases and particle size were tested.And the phase composition of the coatings was analyzed by X-ray.The results indicate that the granularity of the powders is closed to nano-scale; the new phases,such as Al2O3,TiB2,MgAl2O4,Zn6Al2O9 and Ti3B4 are found in the coating.The ceramic coatings have good thermal shock resistance,and up to 35 or more times.
