Naprężenia własne w powłokach natryskiwanych cieplnie

• Autorzy: Żórawski W.

Warianty tytułu

EN

Residual stresses in thermal sprayed coatings

• Konferencja: II Międzynarodowa Konferencja Natryskiwania Cieplnego Metalizacja w Przemyśle - dziś i jutro, Szklarska Poręba, 21-23 września 2009
• Języki publikacji: PL

Abstrakty

PL

Omówiono przyczyny powstawania naprężeń własnych w powłokach natryskiwanych cieplnie. Zbadano właściwości powłok otrzymanych z proszków NiCrBSi oraz określono w nich za pomocą dyfraktometru D-8 Advance poziom naprężeń własnych. Badania mikrostruktury otrzymanych powłok pokazały, że miały one zróżnicowaną mikrostrukturę, a wykonana analiza dyfraktometryczna wykazała ich różny skład fazowy w zależności od zastosowanej metody natryskiwania. Nałożone naddźwiękowo powłoki miały mniejsze naprężenie własne niż powłoki natryskiwane plazmowo, a w wyniku obróbki wykańczającej (szlifowanie) poziom naprężeń własnych w natryskiwanych powłokach uległ obniżeniu.

EN

Reasons of formation of residual stresses in thermal sprayed coatings are discussed. Properties of coatings obtained from NiCrBSi powders were investigated and a level of their residual stresses was determined by means of a D-8 Advance diffractometer. Tests of microstructure of obtained coatings showed that they had diversified microstructure, and a diffractometric analysis demonstrated their different phase composition depending on a method of spraying used. Coatings coated with the supersonic method featured with lower residual stresses than those coated with the plasma method, and as a result of finishing (grinding) the level of residual stresses in coatings coated decreased.

Słowa kluczowe

PL

naprężenie własne; natryskiwanie cieplne; powłoka NiCrBSi; właściwości

EN

residual stress; thermal spraying; NiCrBSi coating; properties

• Wydawca: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
• Czasopismo: Przegląd Spawalnictwa
• Rocznik: 2009
• Tom: R. 81, nr 9
• Strony: 63--70
• Opis fizyczny: Bibliogr. 33 poz., il.

Twórcy

autor

Żórawski W.

• Politechnika Świętokrzyska

Bibliografia

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