Phase transformation behavior of nanocrystalline Ni–W–P alloys containing various W and P contents

Evaluation of Tribological Properties and Optimization of Electroless Ni-P-W Coating Under Dry Condition Using Grey Fuzzy Analysis

“…Due to the incorporation of W in the alloy, the phase transformation temperature is raised with the precipitation of Ni3P and crystallization of Ni [17]. The phase transformation behavior observed in the present work agrees well with the theories proposed by other researchers [17,33]. A high value of hardness and consequently high wear resistance is observed in heat treated Ni-P-W coated specimens [16][17][18][19][20][21][22] due to the precipitation of phosphides and solid solution strengthening by Ni (W) on heat treatment.…”

“…4). The incorporation of tungsten improves the crystallinity of the coatings [33]. Hence a broad peak superimposed by a sharp peak of Ni is observed in the XRD plot in Fig.…”

“…The first instance of electroless Ni-P-W coating was reported by Pearlstein and Weightman [28] in 1963 and many investigations were reported henceforth. Several research works has been carried out by Balaraju and Rajam [29] as well as Balaraju et al [30][31][32][33] to investigate the deposition mechanism, surface morphology, microstructure, phase transformation and corrosion behavior. Electroless Ni-P-W coatings exhibit enhanced tribological behavior.…”

“…Exhaustive review of the literature reveals that most of the studies related to electroless Ni-P-W coating are directed mainly towards effect of heat/mechanical treatments of the deposits on its tribological properties, corrosion resistance and coating characterization under different deposition conditions [16][17][18][19][20][21][29][30][31][32][33][34]. Due to the broad industrial usage of EN coatings in industries, their investigation and optimization is gaining immense importance [35][36][37][38].…”

Characteristics of bulk liquid undercooling and crystallization behaviors of jet electrodeposition Ni–W–P alloy

“…[1][2][3][4] In order to meet the engineering application as coating, some metals like tungsten and tin are added in Ni-P matrix to further enhance their properties. 5,6 Among them, Ni-W-P ternary alloy has received considerable attention because tungsten possesses unique properties such as high melting point (3410 • C), low coefficient of linear thermal expansion and high tensile strength. Therefore, it is expectant to obtain Ni-W-P ternary alloy with excellent mechanical properties like hardness and strength, physical properties like thermal stability and electricity and so on.…”