. Transactions. Fig. 4.—Chrome-steel container after heating to 1000° C, after etching15 sec. with 4 per cent, nitric acid. X 50. Cross-section at junction of ZONES. whose direction this work was carried out, the cylinders were analyzedinside and outside for nitrogen. However, they showed no unusual 260 NITROGEN IX STEEL AND THE EROSION OF GUNS ■ ■■ 1 ■H ■1 \ ^^B^ fi i t-. J f r1 > i. / ,/ ■L^ rs-ife*^ * -IK Fig. 5.—Same as Fig. 4, within iusl uf i-Kx^xKATiu-N, aftek 1-J -ft. with 4 peh CENT. NITRIC ACID. X 500. BlACK LINES ARE SMALL Fig. 6.—Same as Fig. 4, in zone of unaffected me
. Transactions. Fig. 4.—Chrome-steel container after heating to 1000° C, after etching15 sec. with 4 per cent, nitric acid. X 50. Cross-section at junction of ZONES. whose direction this work was carried out, the cylinders were analyzedinside and outside for nitrogen. However, they showed no unusual 260 NITROGEN IX STEEL AND THE EROSION OF GUNS ■ ■■ 1 ■H ■1 \ ^^B^ fi i t-. J f r1 > i. / ,/ ■L^ rs-ife*^ * -IK Fig. 5.—Same as Fig. 4, within iusl uf i-Kx^xKATiu-N, aftek 1-J -ft. with 4 peh CENT. NITRIC ACID. X 500. BlACK LINES ARE SMALL Fig. 6.—Same as Fig. 4, in zone of unaffected metal, after etching 15 sec. WITH 4 FEB cent, NITRIC ACID. X 500. H. E. WHEELER 261
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
