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Analysis of the possibility of applying of alloy and composite coatings after plastic working in shipbuilding

Dyl T.

Advances in Materials Science

2014

Vol. 14, nr 4(42)

82--91

Alloy and composite coatings are widely used in engineering, automotive and shipbuilding because of the possibility of improving the operational characteristics of the surface layer (mechanical, tribological, corrosion and decorative). The welding technology of applying alloy and composite coatings is widely used. The technology of infrasound thermal spraying of metal matrix composite coatings was presented. It is a simple technology and a very useful one in ship machinery regeneration during the cruise craft (e.g. internal combustion engines, torque pumps, separators). The metal matrix composite coatings must undergo finishing due to high surface roughness after application. Coatings obtained by thermal spraying have a large surface roughness, it is therefore necessary to make finishing coatings. Due to economic and technological developments it is essential that the coating was thin, abrasion-resistant, high smoothness, and the finishing was of chip that is not cause material loss. In order to ensure quality of technology offered the elements of the of machines used in shipbuilding of cold working by rolling, with small values of strain ratio, ultimately as a finishing alloy and composite coating is planned to use surface plastic forming of machine parts.

Oddziaływania tribochemiczne powierzchni metalowych i kompozytowych z dodatkami przeciwzużyciowymi typu ZDTP

Ozimina D., Madej M.

Tribologia

2008

nr 3

215-224

W pracy przedstawiono wyniki badań oddziaływań adsorpcyjnych metalowych elementów węzłów tarcia: stali 100Cr6, powłoki stopowej Ni-P oraz powłoki kompozytowej Ni-P-Al2O3. Powłoki stopowe i kompozytowe wytwarzano sposobem bezprądowym na podłożu ze stali 100Cr6. Badania obejmowały pomiary adsorpcji oraz właściwości tribologicznych. Testy tribologiczne na testerze T-11 realizowano w skojarzeniu kula–tarcza w warunkach tarcia technicznie suchego oraz tarcia ze smarowaniem modelową substancją smarową oraz modelową substancją smarową zawierającą dodatek przeciwzużyciowy w postaci dialkiloditiofosforanu cynku – ZDTP. Badania tarciowe realizowano w temperaturze otoczenia To = 22°C, dodatkowo testy dla powłok kompozytowych wykonano w temperaturze podwyższonej TP = 150°C.

The article discusses the analysis of adsorptive interactions of metallic elements of the friction junction, i.e. for the 100 Cr6 steel, alloy Ni-P coatings, and the composite coatings, i.e. Ni-P-Al2O3. The alloy and composite coatings were superimposed on steel elements, 100Cr6, using the electrolyse plating technique. The investigations included the measurements of adsorption, tribological tests, and analyses of the effects of tribochemical interactions using in a ball- on-disc system device. The tests were relaxed on a T-01M tester in technically dry friction conditions and during friction for model lubricant and for model lubricant containing antiwear additive – ZDTP. The research was realised in To = 22°C. Additionally, there were tests for composite coatings in an increased temperature Tp = 150°C. The analysis of the adsorption on the tribological properties of the coatings shows that there is a significant influence of this phenomenon on the wear.