重力分离SHS内衬复合管研究
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摘要
研究了重力分离自蔓延高温合成(Self-propagating High-temperatureSynthesis,简称SHS)法制备陶瓷内衬复合管的技术,采用(Al-Fe_2O_3-CuO)+SiO_2复合铝热体系,成功制备出较小内径(38mm)的陶瓷内衬复合管,在耐磨、耐腐蚀领域中有着广阔的应用前景。
通过制备试验,运用XRD、SEM、光学显微镜等综合手段,分析了添加剂SiO_2、CuO、SiC和填料密度对复合管组织性能的影响。
分析表明,陶瓷层主要由基体相a-Al_2O_3和少量铁铝尖晶石FeAl_2O_4、硅线石Al_2SiO_5以及少量未分离的金属颗粒构成。复合管的过度层由a相(Cu在a-Fe中固溶体)和Cu相组成。基体相a-Al_2O_3呈现出交叉状生长,铁铝尖晶石FeAl_2O_4存在于枝晶处,硅线石Al_2SiO_5则存在于晶界处。由于陶瓷熔体的包裹作用,少量的Cu、Fe以粒子形态存在于陶瓷组织中。SiC形成内晶型微晶弥散在基体Al_2O_3中。
文中分别从陶瓷层厚度、密度、硬度、腐蚀失重率以及抗剪强度等方面论述了填料密度、SiO_2、CuO、SiC对组织性能的影响,重点探讨了SiC、CuO对陶瓷层致密性影响。纳米SiC的引入,进一步提高了陶瓷层的致密性,可以将孔隙度降低到4%以下。
The methods of preparing ceramic lined steel pipes by SHS-gravitational (Self-propagating High-temperature Synthesis, for short SHS) process were comprehensively studied. The ceramic lined steel pipes with the small inner diameter (30mm) have been successfully made by SHS-gravitational method with (Al-Fe_2O_3-CuO) + SiO_2 multiple thermit system, which were wildly used in the wearable and anti-corrosive fields.
By preparing experiment, the influence on structure and performance caused by additive SiO_2、CuO、SiCand filling density were investigated by using XRD, SEM, and optics microscope.
The results of analysis show that the main phases of the ceramic were composed of a-Al_2O_3、a little FeAl_2O_4、Al_2SiO_5 and a bit of metal particle no separated. The intermediate metallic layer consisted of a phase (the solid solution of Cu in a-Fe) and Cu phase.
The growth of main phase a-Al_2O_3 is intersectant, and FeAl_2O_4 is in the dendrite, Al_2SiO_5 is in the interphase of dendrite. A bit of Cu and Fe particle separate in the ceramic tissue. SiC exist in the ceramic tissue with particulate.
We study the influence on the ceramic layer by adding some different additive(for example: SiO_2、CuO、SiC),and by introducing the different thermit density, from factors as ceramic layer thickness, density, rigidity, corrupt weightless rate, and shear strength. We emphasize the study of the influence of CuO and SiC on ceramic layer compactness. Nano SiC is introduced to ceramic tissue, ulteriorly increase the compactness. of ceramic layer,and reduce the porosity of ceramic layer within 4%.
通过制备试验,运用XRD、SEM、光学显微镜等综合手段,分析了添加剂SiO_2、CuO、SiC和填料密度对复合管组织性能的影响。
分析表明,陶瓷层主要由基体相a-Al_2O_3和少量铁铝尖晶石FeAl_2O_4、硅线石Al_2SiO_5以及少量未分离的金属颗粒构成。复合管的过度层由a相(Cu在a-Fe中固溶体)和Cu相组成。基体相a-Al_2O_3呈现出交叉状生长,铁铝尖晶石FeAl_2O_4存在于枝晶处,硅线石Al_2SiO_5则存在于晶界处。由于陶瓷熔体的包裹作用,少量的Cu、Fe以粒子形态存在于陶瓷组织中。SiC形成内晶型微晶弥散在基体Al_2O_3中。
文中分别从陶瓷层厚度、密度、硬度、腐蚀失重率以及抗剪强度等方面论述了填料密度、SiO_2、CuO、SiC对组织性能的影响,重点探讨了SiC、CuO对陶瓷层致密性影响。纳米SiC的引入,进一步提高了陶瓷层的致密性,可以将孔隙度降低到4%以下。
The methods of preparing ceramic lined steel pipes by SHS-gravitational (Self-propagating High-temperature Synthesis, for short SHS) process were comprehensively studied. The ceramic lined steel pipes with the small inner diameter (30mm) have been successfully made by SHS-gravitational method with (Al-Fe_2O_3-CuO) + SiO_2 multiple thermit system, which were wildly used in the wearable and anti-corrosive fields.
By preparing experiment, the influence on structure and performance caused by additive SiO_2、CuO、SiCand filling density were investigated by using XRD, SEM, and optics microscope.
The results of analysis show that the main phases of the ceramic were composed of a-Al_2O_3、a little FeAl_2O_4、Al_2SiO_5 and a bit of metal particle no separated. The intermediate metallic layer consisted of a phase (the solid solution of Cu in a-Fe) and Cu phase.
The growth of main phase a-Al_2O_3 is intersectant, and FeAl_2O_4 is in the dendrite, Al_2SiO_5 is in the interphase of dendrite. A bit of Cu and Fe particle separate in the ceramic tissue. SiC exist in the ceramic tissue with particulate.
We study the influence on the ceramic layer by adding some different additive(for example: SiO_2、CuO、SiC),and by introducing the different thermit density, from factors as ceramic layer thickness, density, rigidity, corrupt weightless rate, and shear strength. We emphasize the study of the influence of CuO and SiC on ceramic layer compactness. Nano SiC is introduced to ceramic tissue, ulteriorly increase the compactness. of ceramic layer,and reduce the porosity of ceramic layer within 4%.
引文
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[3]Merzhanov A G,Borovinskaya I P.A new class of combustion process[J].Combust.Sci.Techno.,1975,10(5,6):195-201
[4]张树格.燃烧合成技术的起源及其在我国的发展[J].粉末冶金技术,1997,4:295-298
[5]殷声.燃烧合成的发展现状[J].粉末冶金技术,2001,19(2):93-97
[6]梁叔权,郑子憔.材料的自蔓延高温合成[J].硅酸盐学报,1993,21(3):261-271
[7]严新炎,孙国雄,张树格.SHS技术的发展及其应用[J].机械工程材料,1995,19(5):1-5
[8]殷声.自蔓延高温合成法(SHS)的发展「J」.粉末冶金技术,1992,10(3):223-227
[9]傅正义,王为民,袁润章.自蔓延高温合成(SHS)过程的点火模型与分析[J].硅酸盐学报,1994,22(5):447-452
[10]Chun C C et al.Inter.J.SHS[J],1998,7(2):219
[11]陈森昌.自蔓延高温合成技术的研究现状[J].湖北汽车工业学报,2002,16(1):26-30
[12]Merzhanov A G.Inter.J.SHS[J],1998,7(2):119
[13]Shi Likai.PRICM3,Adv.Mater.Proe,1998,13
[14]Lee W.C,Chung S.L.Inter.J.SHS[J],1992,1(2):211
[15]李沐山.自蔓延高温合成法制取难熔的化合物[J].硬质合金,1991,8(1):6-21
[16]Baizykin V V.Initiation of SHS Processes[J].Pure & Appl.Chem.,1992,64(7):909-918
[17]袁润章,伏正义,王为民.自蔓延高温合成材料新工艺「J」.武汉工业大学学报,1991,13(3):2-4
[18]胡文彬,刘威威.自蔓延高温反应过程中热化学的编程计算[J]·中国有色金属学报,1994,4(1):59-63
[19]许兴利,韩杰才.大活化能二元无气SHS过程的一维波速解[J].材料科学与工艺,1998,6:66-68
[20]邹正光,付正义,袁润章.自蔓延高温合成材料中耗散结构及研究意义[J].武汉工业
[21]J.B.Holt,Z.A.Munir.Material Science,1986,21:251
[22]A.G.Merzhanov,Chemogolvka.Combustion Processes in Chemical Technology and Metallurgy,1975
[23]S.Zhang,Z.A.Munir,I.Mater.Sci.,1991,22:3685
[24]D.Taylor,Mpuch.Science of Ceramics 14,1988,15
[25]A.G.Merzhanov.Combustion and Plasma Synthesis of High temperature Materials.Edited by Z.A.MunirandJ.B.Holt,1990,99-153
[26]V.A.M.Eslamlo-GramiandZ.A.Munir,Am.Ceram.Soc.Bull,1990,73:2222
[27]邹正光,付正义,袁润章.原料组份、粒度对Ti-C-Fe体系自蔓延高温合成的影响[J].无机材料学报,1998,13:207-213
[28]张数格.粉末冶金技术[J],1992,11:301-309
[29]Munir Z.A.自蔓延燃烧合成法制取高温材料.张树格译.粉末冶金技术,1988,6(2):109-116
[30]张玉龙编.先进复合材料制造手册[M].北京:机械工业出版社,2003,573-575
[31]杜心康,王建江,尹玉军,等·自蔓延高温合成表面涂层技术进展[J]·材料开发与应用,2002,2(4):34-38
[32]Yukhvid V.I.Modification of SHS Processes[J].Pure and applied Chemistry,1992,64(7):977-988
[33]Adachi S,Wada T,Mihara T.High Pressure self-combustion sintering of alumina-titanium carbide ceramic composite[J].J.Am.Ceram.Soc.,1990,73(5):1451-1452
[34]李杨,李庆文.自蔓延高温合成技术及其应用.郴州师范高等专科学校学报[J],2003,4(2):45-46
[35]Merzhanov A.G,Yukhvid V.I.In:Proceeding of the first US-Japanese Workshop on Combustion Synthesis.Tokyo:The Institute for Metals,1990:121
[36]Merzhanov A.G.,Yukhvid V I.Canadian Patent,No.1058841,1979
[37]Odawara O and Ikeuchi J.Study on Composite Materials with a Centrifugal-Thermit Process[J].Transaction of the Japan Institute of Materials,1981,45(3):316-321
[38]王克智,张曙光.离心SHS陶瓷内衬复合钢管的微观结构和性能研究[J].硅酸盐学报,1995,23(3):286-290
[39]佐多延博.SHS法材料合成技术及应用工业火药,1988,49(4):242-248
[40]全建民,李继红,王春.添加剂对静态铝热自蔓延高温合成陶瓷涂层影响的研究[J].机械工程材料,1996,20(3):36-39
[41]赵忠民,王建江,等.重力分离SHS法制备陶瓷内衬复合钢管的组织与性能[J].机械工程材料,1998,22(2):34-37
[42]高翔.白加热钢基陶瓷表面覆层技术[J].新技术新工艺,1994,3:36-39
[43]佐多延博.SHS法材料合成技术及应用[J].工业火药,1988,49(4):242-248
[44]赵忠民.添加剂对煤粉喷枪SHS陶瓷内衬组织利性能的影响.材料科学与工艺[J],1999,1:67-71
[45]叶明惠,赵忠民,杜心康,等.SHE陶瓷内衬复合管工艺参数的研究[J].铸造,1999,(8):1-5
[46]Munir Z A.Self-propagation exothermic reaction:the synthesis of high temperature materials by combustion.Materials Science Report,1989,(3):277-365
[47]赵九州·Zn--Pb偏晶合金液相分离机制及凝固行为[博士学位论文].哈尔滨:哈尔滨工业大学,1994
[48]齐梅尔曼.冶金和材料技术知识库.方绍富,译.北京:冶金工业出版社,1998:289
[49]赵忠民,王建江,叶明惠,等.SHS陶瓷内衬复合管的研究.特种铸造及有色合金,1999:49-52
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