稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2011年
7期
1138-1140
,共3页
吕延伟%于晓东%谭成文%孙铁峰%马昆松%才鸿年
呂延偉%于曉東%譚成文%孫鐵峰%馬昆鬆%纔鴻年
려연위%우효동%담성문%손철봉%마곤송%재홍년
CVD钨%相成分%压缩性能%退火处理
CVD鎢%相成分%壓縮性能%退火處理
CVD오%상성분%압축성능%퇴화처리
CVD tungsten%phase composition%compressive property%annealing treatment
采用冷壁化学气相沉积系统,利用H2还原WF6工艺,在纯铜管表面制备获得了高纯钨材料.在440℃沉积温度下,得到具有混合相的钨管,其压缩性能远低于在540℃条件下得到的只具有α相的钨管.由此表明,β-W的出现极大地降低了钨管的压缩性能在400℃条件下,对具有混合相的钨管进行1h保护气氛退火后,钨管材料中的β相消失,同时其压缩性能与只具有α相的沉积态钨管相近.
採用冷壁化學氣相沉積繫統,利用H2還原WF6工藝,在純銅管錶麵製備穫得瞭高純鎢材料.在440℃沉積溫度下,得到具有混閤相的鎢管,其壓縮性能遠低于在540℃條件下得到的隻具有α相的鎢管.由此錶明,β-W的齣現極大地降低瞭鎢管的壓縮性能在400℃條件下,對具有混閤相的鎢管進行1h保護氣氛退火後,鎢管材料中的β相消失,同時其壓縮性能與隻具有α相的沉積態鎢管相近.
채용랭벽화학기상침적계통,이용H2환원WF6공예,재순동관표면제비획득료고순오재료.재440℃침적온도하,득도구유혼합상적오관,기압축성능원저우재540℃조건하득도적지구유α상적오관.유차표명,β-W적출현겁대지강저료오관적압축성능재400℃조건하,대구유혼합상적오관진행1h보호기분퇴화후,오관재료중적β상소실,동시기압축성능여지구유α상적침적태오관상근.
The high pure W(HPW)was deposited on the surface of purity Cu tubes through WF6 reduction by H2 adopting cold-wall atmospheric pressure CVD system.Results show that the compressive strength of the tungsten tube with the mixture phase deposited at 440℃ is much lower than that with only a phase deposited at 540℃.The existence of β phase has a significant negative influence on the compressive property.After annealing treatment at 400℃ for 1 h,the β phase in the mixture will disappear,and its compressive strength reaches the level of the as-depositedα-W.