Which of the following formulas show the Sievert’s law of percent of hydrogen (H) present in a melt?(a) H = K(pHa)^2(b) H = K*pHa(c) H = K/pHa(d) H = K√pHaI had been asked this question in a national level competition.This interesting question is from Gases in Metals in portion Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Which of the following formulas show the Sievert’s law of percent of

1.	Which of the following formulas show the Sievert’s law of percent of hydrogen (H) present in a melt?(a) H = K(pHa)^2(b) H = K*pHa(c) H = K/pHa(d) H = K√pHaI had been asked this question in a national level competition.This interesting question is from Gases in Metals in portion Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I
Answer» Right answer is (d) H = K√pHa The BEST explanation: SIEVERT’s law states that the amount of hydrogen DISSOLVED in a melt varies as % hydrogen present (H) = K√pHa, where pHa is the partial pressure of hydrogen in the atmosphere over the melt, and K is a CONSTANT.

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