电弧超音速喷涂技术及应用研究
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摘要
锅炉磨损是发电企业最重要的问题之一。电弧超音速喷涂技术(HVAS)可以有效的解决此问题。其机理是在设备上喷涂FeCrAl涂层,增加其高温耐蚀性能和耐磨性能。本文分析了电弧超音速喷涂层的微观结构,研究了涂层的结合强度、抗高温腐蚀性能和热震性能。超音速喷涂的粒子速度决定冲击基体的压力大小,提高喷涂粒子的速度可以使粒子与基体结合的更加紧密。涂层的显微组织呈典型的层状结构特征,组织致密,颗粒间有很薄的氧化物膜和少量气孔。研究表明,FeCrAl涂层比45号钢的抗高温腐蚀性能更出色。FeCrAl涂层低温热腐蚀形成疏松的Fe_2O_3是其腐蚀的主要原因。
The efficient solution of the furnace damage is one of the most important problems. The supersonic velocity electric arc spraying technology (HVAS) has gained satisfactory solution. HVAS produces FeCrAl-coating on the structural materials to enhance its high-temperature corrosion resistance and wear-resistant features. The microstructures of the FeCrAl coating, the bondstrength, high-temperature corrosion resistance, thermal shock resistance and porosity of coatings produced by HVAS have been studied. The HVAS particle speed decides the impact basal body pressure. The increased particle speed makes the combination of the particle and the basal more concrete. The light microscope is used to analyze the microstructure of the Feral coating produced by HVAS. The microscopic structure of coatings appears typical layered structure characteristics. The coatings have high density and very thin oxide films and a small quantity of gas porosity. The study indicates that corrosion resistance of FeCrAl coating by HVAS is better than that of 45# steel. The loose Fe_2O_3 formed in low-temperature hot corrosion of FeCrAl coating is the main reason of the corrosion.
The efficient solution of the furnace damage is one of the most important problems. The supersonic velocity electric arc spraying technology (HVAS) has gained satisfactory solution. HVAS produces FeCrAl-coating on the structural materials to enhance its high-temperature corrosion resistance and wear-resistant features. The microstructures of the FeCrAl coating, the bondstrength, high-temperature corrosion resistance, thermal shock resistance and porosity of coatings produced by HVAS have been studied. The HVAS particle speed decides the impact basal body pressure. The increased particle speed makes the combination of the particle and the basal more concrete. The light microscope is used to analyze the microstructure of the Feral coating produced by HVAS. The microscopic structure of coatings appears typical layered structure characteristics. The coatings have high density and very thin oxide films and a small quantity of gas porosity. The study indicates that corrosion resistance of FeCrAl coating by HVAS is better than that of 45# steel. The loose Fe_2O_3 formed in low-temperature hot corrosion of FeCrAl coating is the main reason of the corrosion.
引文
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[2] 徐滨士. 表面工程. 北京:机械工业出版社,2000
[3] 邓世军.热喷涂技术手册.北京:机械工业出版社,1999
[4] 鲍明远,孟繁吉.氧乙炔火焰粉末喷涂和喷焊技术.北京:机械工业出版社,1995.13
[5] 丁传贤.等离子喷涂层的进展.材料保护,1999
[6] 美国焊接学会编,麻煜黄,贾永昌,刘维祥译.热喷涂原理和应用技术.成都:四川科学技术出版社,1987:50
[7] 李正伟,何业东.火焰热解喷涂 AL2O3-Y2O3陶瓷涂层.中国稀土学报,1997(4):363
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[9] 姜江.热喷焊技术在锅炉管道防护中的应用.山东冶金,2005.4:24-25
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[15] T\omoyasu T.热喷涂粉末.材料保护,1995(4):41
[16] 刘长松.电弧超音速喷涂合成 TiC-Fe 涂层的热力学分析.金属学报,2001(1):62
[17] 钱强,刘克勇,热喷涂技术在国内外的应用,机械工程材料,1995:19
[18] William Lucas,Arc surfacing and cladding process.Welding&Metal Fabrication,1994
[19] 高阳.梯度热障涂层的发展和未来应用.材料工程,1996,12:3
[20] 田保红等.电弧超音速喷涂复合涂层高温冲蚀行为研究.中国表面工程,2000:13(1):22-26
[21] 萨威林.喷丸强化.机械工业出版社,1980 年第一版
[22] V V Sobolev.Mechanism of Oxidation of Thermally Sprayed Coatings.Proceedings of ISTC 97:117-120
[23] 马汉武.喷涂参数对粉末沉积率影响的试验分析.江苏理工大学学报,1998,19(3):62
[24] 刘长松,殷声.反应热喷涂工艺的发展.材料保护,2000(1):83-85
[25] Lopez V.Mater Sci Eng.等离子喷涂氧化铝涂层的激光重熔.材料保护,1995(4):40
[26] 胡正前.等离子喷涂 TiC-Ni-Mo 金属陶瓷涂层成分对组织与性影响的研究.复合材学学报,1999(3):87
[27] 赵文轸.材料表面工程导论.西安交通大学出版社,1998
[28] 薄鑫涛译.控制喷丸处理-提高疲劳强度的冷加工方法.国外金属热处理
[29] 杨中元.镍铝复合丝和镍铝合金丝及其涂层.材料工程,2002 (2)
[30] 孙希泰等.材料表面强化技术.化学工业出版社,2005.4:301
[31] 徐滨士.电弧超音速喷涂技术及其在火电厂的应用研究.湖南电力,1999 (6):1-2,13
[32] T.Kuwashima,I.Takahashi. Joining of Ceramics and Metals by Thermal Spray Using Mixed Powers. Proceedings of ITSC 97:199-203
[33] 徐滨士.电弧超音速喷涂技术.国家产学研设备工程开发推广中心,1998,1
[2] 徐滨士. 表面工程. 北京:机械工业出版社,2000
[3] 邓世军.热喷涂技术手册.北京:机械工业出版社,1999
[4] 鲍明远,孟繁吉.氧乙炔火焰粉末喷涂和喷焊技术.北京:机械工业出版社,1995.13
[5] 丁传贤.等离子喷涂层的进展.材料保护,1999
[6] 美国焊接学会编,麻煜黄,贾永昌,刘维祥译.热喷涂原理和应用技术.成都:四川科学技术出版社,1987:50
[7] 李正伟,何业东.火焰热解喷涂 AL2O3-Y2O3陶瓷涂层.中国稀土学报,1997(4):363
[8] 陈国定.表面涂层技术.北京:机械工业出版社,1994
[9] 姜江.热喷焊技术在锅炉管道防护中的应用.山东冶金,2005.4:24-25
[10] 徐滨士,刘世参等. 电站锅炉水冷管道热腐蚀及高速电弧超音速喷涂防护新技术.中国电力. 2000,33(3): 13-16
[11] Legeral A C.University of limoges.France Key Engineering Materials,1997
[12] P Jokinen.HVOF-sprayed functionally gradient coating.Proceedings of ITSC ,1995:498-501
[13] Subrahmanyam J.Mater Sci.1992(27):63
[14] 杨军.热喷涂陶瓷脱水板的研究.西北轻工学院硕士论文,1994
[15] T\omoyasu T.热喷涂粉末.材料保护,1995(4):41
[16] 刘长松.电弧超音速喷涂合成 TiC-Fe 涂层的热力学分析.金属学报,2001(1):62
[17] 钱强,刘克勇,热喷涂技术在国内外的应用,机械工程材料,1995:19
[18] William Lucas,Arc surfacing and cladding process.Welding&Metal Fabrication,1994
[19] 高阳.梯度热障涂层的发展和未来应用.材料工程,1996,12:3
[20] 田保红等.电弧超音速喷涂复合涂层高温冲蚀行为研究.中国表面工程,2000:13(1):22-26
[21] 萨威林.喷丸强化.机械工业出版社,1980 年第一版
[22] V V Sobolev.Mechanism of Oxidation of Thermally Sprayed Coatings.Proceedings of ISTC 97:117-120
[23] 马汉武.喷涂参数对粉末沉积率影响的试验分析.江苏理工大学学报,1998,19(3):62
[24] 刘长松,殷声.反应热喷涂工艺的发展.材料保护,2000(1):83-85
[25] Lopez V.Mater Sci Eng.等离子喷涂氧化铝涂层的激光重熔.材料保护,1995(4):40
[26] 胡正前.等离子喷涂 TiC-Ni-Mo 金属陶瓷涂层成分对组织与性影响的研究.复合材学学报,1999(3):87
[27] 赵文轸.材料表面工程导论.西安交通大学出版社,1998
[28] 薄鑫涛译.控制喷丸处理-提高疲劳强度的冷加工方法.国外金属热处理
[29] 杨中元.镍铝复合丝和镍铝合金丝及其涂层.材料工程,2002 (2)
[30] 孙希泰等.材料表面强化技术.化学工业出版社,2005.4:301
[31] 徐滨士.电弧超音速喷涂技术及其在火电厂的应用研究.湖南电力,1999 (6):1-2,13
[32] T.Kuwashima,I.Takahashi. Joining of Ceramics and Metals by Thermal Spray Using Mixed Powers. Proceedings of ITSC 97:199-203
[33] 徐滨士.电弧超音速喷涂技术.国家产学研设备工程开发推广中心,1998,1
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