Pulsed plasma transferred arc surfacing is presently used in many industrial applications to make protective layers against corrosion, temperature exposition, and excessive wear. Increasing wear resistance is especially important in areas of industry where titanium alloys are used, such as aviation and cosmonautics, because the wear resistance of titanium alloys is often weak. One way to increase the wear resistance is to deposit or form a cermet with a titanium matrix (TMC) on the surface of the part. The present study deals with the fabrication and characterization of TMC based on B₄C. TMC with B₄C was formed by co-feeding Ti6Al4V and B₄C powder into a melting pool. Two B₄C powders with different grain size were mixed with Ti6Al4V matrix in two ratios. It has been found that the deposited, thick layers have dispersed B₄C grains in the matrix. The B₄C grains partially dissolve in the titanium matrix to form borides and carbides. The resulting structure of the deposits is formed by a matrix with dispersed TiC_x and TiB_w particles; in some clusters, a full transformation of Ti was observed, resulting in regions containing only borides and carbides. The deposits are metallurgically connected to the substrate—Ti6Al4V. The TMCs were investigated in terms of microstructure and chemical composition and phase composition. Indentation hardness and reduced elastic modulus of individual phases were assessed by nanoindentation modulus mapping. Friction coefficient was determined using the linear pin test.

脉冲等离子转移电弧堆焊目前在许多工业应用中用于制造防止腐蚀、温度暴露和过度磨损的保护层。增加耐磨性在使用钛合金的工业领域尤其重要，例如航空和航天，因为钛合金的耐磨性通常很弱。提高耐磨性的一种方法是在零件表面沉积或形成具有钛基体 (TMC) 的金属陶瓷。本研究涉及基于 B ₄ C 的 TMC的制造和表征。通过将 Ti6Al4V 和 B ₄ C 粉末共同进料到熔池中形成具有 B _{4 C 的 TMC。}两个 B ₄不同粒度的C粉末与Ti6Al4V基体以两种比例混合。已经发现沉积的厚层在基体中具有分散的B ₄ C晶粒。B ₄ C 晶粒部分溶解在钛基体中形成硼化物和碳化物。沉积物的最终结构由具有分散的 TiC _x和 TiB _{w的基体形成}粒子; 在一些簇中，观察到 Ti 的完全转变，导致区域仅包含硼化物和碳化物。沉积物以冶金方式连接到基材——Ti6Al4V。在微观结构和化学成分和相组成方面研究了 TMC。通过纳米压痕模量映射评估各个相的压痕硬度和降低的弹性模量。使用线性销测试确定摩擦系数。