,1130 北京科技大学学报 2006年第12期 路封装.北京：国防工业出版社，1993,202 [6]俞燮廷.气体的露点，粉末治金技术，1994,12(2)：149 [2]Abendroth R P.Oxide formation and adherence on an iron" [7]朱日衫，何业东，齐慧滨。高温腐蚀及耐高温腐蚀材料上 cobalt-nickel glass sealing alloy.Mater Res Standards,1965. 海：上海科学技术出版社，1993.20 5(9):459 [8]刘江南，韩志礼，严文.Fe一Mn一A℃合金的高温氧化行 [3]Piscitelli R A.Rhee S K,Bradley F N.Oxidation of Fe-29Ni 为.钢铁研究学报，1993,5(4)：51 -17Co alloy.Solid State Sci Technol.1976.6:929 [9]朱日彰.金属腐蚀学.北京：治金工业出版社，1988：22 [4]Thomas W B.II.Matched glassto metal seal improvements [10]李美栓.金属的高温腐蚀.北京：治金工业出版社，2001： by controlled atmosphere metal oxidation.Solid State Sci 36 Technol,1986,29(9):73 [11]邵曼君、环境扫描电镜原位研究纯F表面氧化过程.金 [5]Bandyopadhyay N.Process conditions for hermetic sealing of 属学报，2000,36(3)：231 kovar to borosilicate glass.Adv Ceram,1989,26:597 Oxidation behavior of kovar alloy in N2/H2O atmosphere under simulated field condition LENG Wenbo,LUO Dawei,SHEN Zhuoshen Materials Science and Engineering School.University of Science and Technology Beijing.Beijing 100083.China ABSTRACT The oxidation behavior of kovar alloy (Fe-29Ni-17Co)was studied in N2/H2O atmosphere under simulated field condition by weighing method.The weight gain curves of kovar alloy oxidized at 1000 C in N2 with different dew points were tested,and the results show that these oxidation kinetics obey parabolic rule.The composition and pattern of the oxides were analyzed by XRD and SEM.Thermodynam- ical calculations reveal that if kovar alloy is oxidized in N2/H2O atmosphere under simulated field condition, external air will infiltrate into the furnace,which increases the partial pressure of oxygen,and the presence of a Fe203 in oxides surface is unavoidable.In the condition of a higher dew point and a longer oxidation time,the quantity of a Fe203 formed will exceed that of Fe304. KEY WORDS kovar alloy;simulated atmosphere;oxidation;ferriferous oxides路封装．北京：国防工业出版社‚1993：202 ［2］ Abendroth R P．Oxide formation and adherence on an iron￾cobalt-nickel glass sealing alloy．Mater Res Standards‚1965‚ 5（9）：459 ［3］ Piscitelli R A‚Rhee S K‚Bradley F N．Oxidation of Fe－29Ni －17Co alloy．Solid State Sci Technol‚1976‚6：929 ［4］ Thomas W B‚II．Matched glass-to-metal seal improvements by controlled atmosphere metal oxidation．Solid State Sci Technol‚1986‚29（9）：73 ［5］ Bandyopadhyay N．Process conditions for hermetic sealing of kovar to borosilicate glass．Adv Ceram‚1989‚26：597 ［6］ 俞燮廷．气体的露点．粉末冶金技术‚1994‚12（2）：149 ［7］ 朱日彰‚何业东‚齐慧滨．高温腐蚀及耐高温腐蚀材料．上 海：上海科学技术出版社‚1993：20 ［8］ 刘江南‚韩志礼‚严文．Fe－Mn－Al－C 合金的高温氧化行 为．钢铁研究学报‚1993‚5（4）：51 ［9］ 朱日彰．金属腐蚀学．北京：冶金工业出版社‚1988：22 ［10］ 李美栓．金属的高温腐蚀．北京：冶金工业出版社‚2001： 36 ［11］ 邵曼君．环境扫描电镜原位研究纯 Fe 表面氧化过程．金 属学报‚2000‚36（3）：231 Oxidation behavior of kovar alloy in N2／H2O atmosphere under simulated field condition LENG Wenbo‚LUO Dawei‚SHEN Zhuoshen Materials Science and Engineering School‚University of Science and Technology Beijing‚Beijing100083‚China ABSTRACT The oxidation behavior of kovar alloy （Fe－29Ni－17Co） was studied in N2／H2O atmosphere under simulated field condition by weighing method．The weight gain curves of kovar alloy oxidized at1000 ℃ in N2 with different dew points were tested‚and the results show that these oxidation kinetics obey parabolic rule．The composition and pattern of the oxides were analyzed by XRD and SEM．Thermodynam￾ical calculations reveal that if kovar alloy is oxidized in N2／H2O atmosphere under simulated field condition‚ external air will infiltrate into the furnace‚which increases the partial pressure of oxygen‚and the presence of α－Fe2O3in oxides surface is unavoidable．In the condition of a higher dew point and a longer oxidation time‚the quantity of α－Fe2O3formed will exceed that of Fe3O4． KEY WORDS kovar alloy；simulated atmosphere；oxidation；ferriferous oxides ·1130· 北 京 科 技 大 学 学 报 2006年第12期