采用湿化学法制备W-TiC复合粉体，然后采用放电等离子体烧结(SPS)技术制备超细晶W-TiC复合材料，并对其复合粉体形貌和烧结复合材料组织结构进行研究。结果表明，对原始TiC粉进行活化预处理，使TiC粉表面获得均匀分布的缺陷，提高TiC粉表面的的亲水性，通过化学还原获得第二相TiC颗粒，且均匀弥散分布于W基体晶界和晶粒内。采用SPS烧结技术获得的超细晶W-TiC复合材料晶粒尺寸为400 nm，致密度为95%，维氏显微硬度值HV 0.2达到1280。
W-TiC composite powders were prepared by wet-chemical process, and ultra-fine grained W-TiC composites were fabricated by spark plasma sintering (SPS). The surface morphologies of W-TiC composite powders and the microstructure of W-TiC composites were studied. The results show that TiC powders are subjected to chemical activation pretreatment to obtain uniform distribution of defects on the surface of TiC powder, thus increasing the hydrophilicity of the TiC surface. The second phase TiC particles are homogeneously and dispersively distribute in the grains and grain boundaries by chemical reduction. The grain size, relative density and the Vicker hardness HV0.2 of the ultra-fine grained W-TiC composites by SPS are 400 nm, 95% and 1280, respectively.
参考文献
| [1] | HAN Y, FAN J L, LIU T, CHENG H C, TIAN J M. The effects of ball-milling treatment on the densification behavior of ultra-fine tungsten powder[J]. International Journal of Refractory Metals and Hard Materials, 2011, 29:743-750.,2011. |
| [2] | MONDAL A, UPADHYAYA A, AGRAWAL D. Effect of heating mode on sintering of tungsten[J]. International Journal of Refractory Metals and Hard Materials, 2010, 28:597-600.,2010. |
| [3] | KURISHITA H, MATSUO S, ARAKAWA H, NARUI M, YAMAZAKI M, SAKAMOTO T, KOBAYASHI S, NAKAI K, TAKIDA T, TAKEBE K, KAWAI M, YOSHIDA N. High temperature tensile properties and their application to toughness enhancement in ultra-fine grained W-(0-1.5)wt% TiC[J]. Journal of Nuclear Materials, 2009, 386/388:579-582.,2009. |
| [4] | CHANTHAPAN S, KULKARNI A, SINGH J, HAINES C, KAPOOR D. Sintering of tungsten powder with and without tungsten carbide additive by field assisted sintering technology[J]. International Journal of Refractory Metals and Hard Materials, 2012, 31:114-120.,2012. |
| [5] | 王超,贺跃辉,彭超群,王世良,刘新利.一维W纳米材料的场发射性能及其可控制备的研究进展[J].中国有色金属学报,2012(06):1632-1641. |
| [6] | 陈勇,吴玉程,于福文,陈俊凌.La2O3弥散强化钨合金的组织性能研究[J].稀有金属材料与工程,2007(05):822-824. |
| [7] | 种法力,于福文,陈俊凌.W-TiC合金面对等离子体材料及其电子束热负荷实验研究[J].稀有金属材料与工程,2010(04):750-752. |
| [8] | 朱玲旭,燕青芝,郎少庭,徐磊,葛昌纯.钨基面向等离子体材料的研究进展[J].中国有色金属学报,2012(12):3522-3528. |
| [9] | 谈军,周张健,朱小鹏,郭双全,屈丹丹,雷明凯,葛昌纯.强流脉冲离子束作用下超细晶钨的抗瞬态热负荷性能评价[J].中国有色金属学报,2012(05):1081-1085. |
| [10] | 范景莲,龚星,祁美贵,刘涛,黄伯云.细晶钨合金的制备与动态失效行为[J].中国有色金属学报,2009(12):2143-2148. |
| [11] | KAJIOKA M, SAKAMOTO T, NAKAI K, KOBAYASHI S, KURISHITA H, MATSUO S, ARAKAWA H. Effects of plastic working and MA atmosphere on microstructures of recrystallized W-1.1%TiC[J]. Journal of Nuclear Materials, 2011, 417:512-515.,2011. |
| [12] | CUI K, SHEN Y Z, YU J, JI B. Microstructural characteristics of commercial purity W and W-1%La2O3 alloy[J]. International Journal of Refractory Metals and Hard Materials, 2013, 41:143-151.,2013. |
| [13] | LEE D, UMER M A, RYU H J, HONG S H. The effect of HfC content on mechanical properties HfC-W composites[J]. International Journal of Refractory Metals and Hard Materials, 2014, 44:49-53.,2014. |
| [14] | LEE D, UMER M A, RYU H J, HONG S H. Elevated temperature ablation resistance of HfC particle-reinforced tungsten composites[J]. International Journal of Refractory Metals and Hard Materials, 2014, 43:89-93.,2014. |
| [15] | ZHANG T Q, WANG Y J, ZHOU Y, SONG G M. High temperature electrical resistivities of ZrC particle-reinforced tungsten-matrix composites[J]. International Journal of Refractory Metals and Hard Materials, 2010, 28:498-502.,2010. |
| [16] | MATSUO S, KURISHITA H, ARAKAWA H, OGAWA T, HASEGAWA A, ABE K, ARAKAWA H, MATSUO S, TAKIDA T, TAKEBE K, KAWAI M, YOSHIDA N. Deformability enhancement in ultra-fine grained, Ar-contained W compacts by TiC additions up to 1.1%[J]. Materials Science and Engineering:A, 2008, 492:475-480.,2008. |
| [17] | XIA M, YAN Q Z, XU L, GUO H Y, ZHU L X, GE C C. Bulk tungsten with uniformly dispersed La2O3 nanoparticles sintered from co-precipitated La2O3/W nanoparticles[J]. Journal of Nuclear Materials, 2013, 434:85-89.,2013. |
| [18] | XIA M, YAN Q Z, XU L, ZHU L X,GUO H Y, GE C C. Synthesis of TiC/W core-shell nanoparticles by precipitate-coating process[J]. Journal of Nuclear Materials, 2012, 430:216-220.,2012. |
| [19] | WAHLBERG S, YAR M A, ABUELNAGA M O, SALEM H G, JOHNSSON M, MUHAMMED M. Fabrication of nanostructured W-Y2O3 materials by chemical methods[J]. Journal of Materials Chemistry, 2012, 22:12622-12628.,2012. |
| [20] | YAR M A, WAHLBERG S, BERGQVIST H, SALEM H G, JOHNSSON M, MUHAMMED M. Chemically produced nanostructured ODS-lanthanum oxide-tungsten composites sintered by spark plasma[J]. Journal of Nuclear Materials, 2011, 408:129-135.,2011. |
| [21] | 崔教林,杨炜,赵伟敏,徐雪波.SPS法制备p-型四元Al-Bi-Sb-Te合金的微结构与热电性能[J].中国有色金属学报,2005(10):1526-1531. |
| [22] | 肖树龙,涂丽娟,于宏宝,田竟,陈玉勇.不同SPS烧结温度Ti-45Al-5.5（Cr,Nb,B,Ta）合金的显微组织及力学性能[J].中国有色金属学报（英文版）,2012(12):2960-2964. |
| [23] | 张朝晖,神祥博,王富耻,魏赛,李树奎,才鸿年.放电等离子烧结TiB/Ti-1.5Fe-2.25Mo复合材料的微观组织与力学性能[J].中国有色金属学报（英文版）,2013(09):2598-2604. |
| [24] | 谈军,周张健,屈丹丹,马垚,李明.放电等离子烧结制备超细晶粒W-TiC复合材料[J].稀有金属材料与工程,2011(11):1990-1993. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%