当前位置: X-MOL 学术Int. J. Appl. Ceram. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis, structure, and properties of polymer‐derived, metal‐reinforced boron carbide cermet composites
International Journal of Applied Ceramic Technology ( IF 2.1 ) Pub Date : 2020-11-14 , DOI: 10.1111/ijac.13657
Boris Dyatkin 1 , Matthew Laskoski 1 , William K. Edelen 1 , Syed B. Qadri 2 , Teddy M. Keller 1
Affiliation  

We report on a novel polymer‐derived synthesis approach that yields boron carbide monoliths and metal‐reinforced B4C cermets. This single‐step approach relies on a preceramic powder blend of boron and an acetylenic resin with a high char yield. At low temperatures below 1500°C and without applied pressures, preceramic precursor reaction bond together and form nanocrystalline refractory B4C matrices. Resulting near net shape boron, carbide monoliths exhibit small crystal grain sizes, maintain chemical purity, and exhibit morphological homogeneity. We reinforce the refractory carbide with five different metals and demonstrate the influence of each on the density, hardness, oxidation stability, and electronic conductivity of resulting cermet composites. We assess the optimal synthesis and reinforcement strategies that tailor these nanostructured materials for inexpensive and high‐performing engineering applications.

中文翻译:

聚合物衍生的金属增强碳化硼金属陶瓷复合材料的合成,结构和性能

我们报道了一种新颖的源自聚合物的合成方法,该方法可产生碳化硼整体材料和金属增强的B 4 C金属陶瓷。这种单步方法依赖于硼和炔属树脂的预陶瓷粉末混合物,并具有较高的炭产率。在低于1500°C的低温下且未施加压力时,陶瓷前体反应结合在一起并形成纳米晶质耐火材料B 4C矩阵。碳化物整料产生接近净形的硼,表现出较小的晶粒尺寸,保持化学纯度,并表现出形态均匀性。我们用五种不同的金属增强了耐火碳化物,并证明了每种对最终金属陶瓷复合材料的密度,硬度,氧化稳定性和电子电导率的影响。我们评估了适合这些纳米结构材料用于廉价和高性能工程应用的最佳合成和增强策略。
更新日期:2020-11-14
down
wechat
bug