纯钼制品组织缺陷研究
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摘要
运用OM、SEM、TEM及其附带的EDS研究了不同厂家钼粉所制钼棒的显微组织及其组织缺陷,重点分析了组织缺陷较多钼棒的显微孔洞形态、化学成分及其相组成。结果表明,不同厂家钼粉生产纯钼棒显微组织不同,细晶组织钼棒组织缺陷较少,而粗晶组织钼棒组织缺陷较多;粗晶组织钼棒显微孔洞形态呈现多样化,有近球形或多边形、椭球形、短棒状、不规则形等形态;显微孔洞边缘杂质元素富集严重,以氧元素为主;显微孔洞边缘由Mo基体以及非晶和纳米晶混合区组成,其中纳米晶为简单单斜点阵结构的MoO_3。
Microstructure and microstructure defects of molybdenum bars made from molybdenum powder of different supplies were studied by OM,SEM,TEM equipped with EDS. Micro-pore morphology,chemical composition and phase composition of molybdenum bars which have more microstructure defects were mainly analyzed. The results indicate that microstructure of molybdenum bars produced from molybdenum powder of different supplies are different. Molybdenum bars with fine grain structure have fewer microstructure defects,while molybdenum bars with coarse grain structure have more defects. Morphology of micro-pores are diversified for coarse-grained molybdenum bars. There are nearly of spherical or polygonal,ellipsoidal,short rod and irregular shapes. The impurities at the edge of micro-pores are enriched seriously,mainly by oxygen element. The micro-pore edge is composed of molybdenum matrix and amorphous and nanocrystalline mixed zone. The nanocrystals are Mo O_3 with simple monoclinic lattice structure.
Microstructure and microstructure defects of molybdenum bars made from molybdenum powder of different supplies were studied by OM,SEM,TEM equipped with EDS. Micro-pore morphology,chemical composition and phase composition of molybdenum bars which have more microstructure defects were mainly analyzed. The results indicate that microstructure of molybdenum bars produced from molybdenum powder of different supplies are different. Molybdenum bars with fine grain structure have fewer microstructure defects,while molybdenum bars with coarse grain structure have more defects. Morphology of micro-pores are diversified for coarse-grained molybdenum bars. There are nearly of spherical or polygonal,ellipsoidal,short rod and irregular shapes. The impurities at the edge of micro-pores are enriched seriously,mainly by oxygen element. The micro-pore edge is composed of molybdenum matrix and amorphous and nanocrystalline mixed zone. The nanocrystals are Mo O_3 with simple monoclinic lattice structure.
引文
[1]王林,朱琦,孙成果,等.玻璃钼电极的纯度对其抗侵蚀性能的影响[J].中国钼业,2013,37(1):38-40.
[2]王锦,安耿,刘仁智.热加工方式及总变形量对厚钼板退火组织的影响[J].中国钼业,2012,36(2):52-55.
[3]王娜,张晓,席莎,等.退火处理对电真空器件用钼棒组织及力学性能的影响[J].中国钼业,2018,42(1):47-50.
[4]张菊平,惠军胜,赵虎.烧结方式对钼制品组织性能的影响研究[J].中国钼业,2015,39(3):41-44.
[5]孙晓云.纯Mo高温塑性变形规律和热轧工艺研究[D].沈阳:东北大学,2013:1-80.
[6]张菊平,付小俊.杂质元素对钼丝力学性能和显微组织的影响[J].中国钼业,2015,39(2):53-56.
[7]严继康,甘国友,袁君,等.不掺杂Ti O2陶瓷的缺陷化学与气孔形成机理[J].中国有色金属学报,2011,21(6):1380-1387.
[8]吕炎,曲万贵,陈宗霖,等.临界变形粗晶形成机理的探讨[J].金属学报,1986,22(6):489-493.
[9]廖乾初,王鸿君,王云,等.体心立方金属的蚀坑性质及其晶体位向的定里分析技术[J].金属学报1989,18(6):713-725.
[10]束德林.工程材料力学性能[M].北京:机械工业出版社,2003:17-35.
[11]赵宝华,朱琦,王林,等.钼及钼合金材料理论与实践[M].西安:西北工业大学出版社,2013:162-187.
[12]郭中正,孙勇,周铖,等.溅射沉积Cu-Mo薄膜的结构和性能[J].中国有色金属学报,2011,21(6):1423-1428.
[13] Belyakov A,Miura H,Sakai T. Dynamic recrystallization underwarm deformation of a 304 type austenitic stainless steel[J]. Materials Science and Engineering A,1998,8(5):139-147.
[14]胡赓祥,蔡珣,戎咏华.材料科学基础[M].上海:上海交通大学出版社,2006,359-370.
[15]甘敏,范晓慧,张麟,等.低品位钼精矿氧化焙烧过程的反应行为[J].中国有色金属学报,2014,24(12):3115-3122.
[16]向铁根.钼冶金[M].长沙:中南大学出版社,2002:6-8.
[17]高名传,童向阳,汪洪生.热喷涂法制备钼系涂层的研究进展[J].中国钼业,2014,38(6):41-47.
[18]梁静,李来平,奚正平,等. TZM合金真空烧结脱氧的机制分析[J].稀有金属材料科学与工程,2011,40(6):987-990.
[2]王锦,安耿,刘仁智.热加工方式及总变形量对厚钼板退火组织的影响[J].中国钼业,2012,36(2):52-55.
[3]王娜,张晓,席莎,等.退火处理对电真空器件用钼棒组织及力学性能的影响[J].中国钼业,2018,42(1):47-50.
[4]张菊平,惠军胜,赵虎.烧结方式对钼制品组织性能的影响研究[J].中国钼业,2015,39(3):41-44.
[5]孙晓云.纯Mo高温塑性变形规律和热轧工艺研究[D].沈阳:东北大学,2013:1-80.
[6]张菊平,付小俊.杂质元素对钼丝力学性能和显微组织的影响[J].中国钼业,2015,39(2):53-56.
[7]严继康,甘国友,袁君,等.不掺杂Ti O2陶瓷的缺陷化学与气孔形成机理[J].中国有色金属学报,2011,21(6):1380-1387.
[8]吕炎,曲万贵,陈宗霖,等.临界变形粗晶形成机理的探讨[J].金属学报,1986,22(6):489-493.
[9]廖乾初,王鸿君,王云,等.体心立方金属的蚀坑性质及其晶体位向的定里分析技术[J].金属学报1989,18(6):713-725.
[10]束德林.工程材料力学性能[M].北京:机械工业出版社,2003:17-35.
[11]赵宝华,朱琦,王林,等.钼及钼合金材料理论与实践[M].西安:西北工业大学出版社,2013:162-187.
[12]郭中正,孙勇,周铖,等.溅射沉积Cu-Mo薄膜的结构和性能[J].中国有色金属学报,2011,21(6):1423-1428.
[13] Belyakov A,Miura H,Sakai T. Dynamic recrystallization underwarm deformation of a 304 type austenitic stainless steel[J]. Materials Science and Engineering A,1998,8(5):139-147.
[14]胡赓祥,蔡珣,戎咏华.材料科学基础[M].上海:上海交通大学出版社,2006,359-370.
[15]甘敏,范晓慧,张麟,等.低品位钼精矿氧化焙烧过程的反应行为[J].中国有色金属学报,2014,24(12):3115-3122.
[16]向铁根.钼冶金[M].长沙:中南大学出版社,2002:6-8.
[17]高名传,童向阳,汪洪生.热喷涂法制备钼系涂层的研究进展[J].中国钼业,2014,38(6):41-47.
[18]梁静,李来平,奚正平,等. TZM合金真空烧结脱氧的机制分析[J].稀有金属材料科学与工程,2011,40(6):987-990.