In case of carbonitriding,by diffusion of which elements the surface become harder of a metal

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📊 Engineering Metallurgy

Q. In case of carbonitriding,by diffusion of which elements the surface become harder of a metal

(A) only carbon
(B) carbon and nitrogen
(C) only nitrogen
(D) none of the above

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✅ Correct Answer: (B) carbon and nitrogen

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