Study on reaction of 15-15Ti with fission products under various oxygen potential

Figures & data

Table 1. Chemical composition of evaluated alloys (in wt.%)

C	Si	Mn	P	S	Cr	Ni	Mo
0.05	0.50	1.50	0.01	0.01	16.01	14.80	2.00
Ti	Al	B	N	Co	V	Cu	Fe
0.44	0.04	0.003	0.02	0.01	0.20	0.02	Bal.

Figure 1. Prepared process for the specimens, (a) the original rod materials and (b) specimen before polishing.

Figure 2. (a) Schematic diagram of the test equipment. (b) Capsules after loading the additives.

Table 2. General results of the test

Sample no.	Oxygen buffer	Attack type	Attack depth
1	Mo/$\mathrm{M}\mathrm{o}{\mathrm{O}}_3$	Matrix attack	30–40 $\mu m$
2	Cr/$\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3$	Matrix attack	20–25$\mu m$

Figure 3. Element mapping of specimen under high oxygen potential.

Table 3. EDS data of Figure 4 (in at.%)

Oxygen buffer	Spectrum no.	Te	Cs	Cr	Fe	Ni	Cs:Cr	Te:Cr	Cs:Fe
Mo/$\mathrm{M}o{O}_2$	1	1.23	3.45	20.34	38.72	9.45	0.17	0.06	0.09
	2	1.03	2.50	32.56	18.30	7.89	0.08	0.03	0.14
	3	0.00	2.23	35.21	19.06	9.00	0.06	0.00	0.12
Cr/$\mathrm{C}{r}_2{O}_3$	4	43.20	0.00	37.10	1.00	2.00	0.00	1.16	0.00
	5	0.00	0.00	17.80	63.06	14.50	0.00	0.00	0.00

Figure 4. SEM cross section of sample, (a) under high oxygen, (b) under lower oxygen potential.

Figure 5. Element line analysis of specimen under lower oxygen potential.

Figure 6. SEM cross section of specimen under higher oxygen potential.

Figure 7. Illustrations of cross section of specimen, (a) before and (b) after the corrosion test.

Figure 8. Illustrations of cross section of specimen, (a) before and (b) after the corrosion test.