SU408213A1 - METHOD OF PHASE ANALYSIS OF TOOL STEELS - Google Patents
METHOD OF PHASE ANALYSIS OF TOOL STEELSInfo
- Publication number
- SU408213A1 SU408213A1 SU1766763A SU1766763A SU408213A1 SU 408213 A1 SU408213 A1 SU 408213A1 SU 1766763 A SU1766763 A SU 1766763A SU 1766763 A SU1766763 A SU 1766763A SU 408213 A1 SU408213 A1 SU 408213A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tool steels
- phase analysis
- phase
- mixture
- dissolution
- Prior art date
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Description
1one
Изобретение относитс к методам анализа металлов, в частности к определению фазового анализа инструментальных сталей. Известен способ фазового анализа сталей, заключающийс в селективном растворении металлической фазы, в смеси сол ной и фосфорной кислот при нагревании с последующим анализом ее на содержание металлов, например алюмини . Недостатком известного способа вл етс невысока селективность разделени фаз вследствие недостаточно обоснованного выбора соотношений кислот в смеси и режима растворени .The invention relates to methods for analyzing metals, in particular to the determination of phase analysis of tool steels. The method of phase analysis of steels is known, which consists in the selective dissolution of the metal phase in a mixture of hydrochloric and phosphoric acids when heated, followed by analysis of the content of metals, such as aluminum. The disadvantage of this method is the low selectivity of phase separation due to insufficiently substantiated selection of the ratios of acids in the mixture and the mode of dissolution.
С целью повыщени селективности отделени фаз инструментальных сталей предлагаетс дл растворени металлической фазы использовать смесь сол ной и фосфорной кислот в соотношении от 25 ; 1 до 50 : 1 и растворение проводить при нагревании пробы до 70-80°С .In order to increase the selectivity of the separation of the phases of tool steels, it is proposed to use a mixture of hydrochloric and phosphoric acids in a ratio of 25 to dissolve the metal phase; 1 to 50: 1 and dissolution is carried out by heating the sample to 70-80 ° C.
Использование выбранных соотношений кислот в смеси обеспечивает избирательное растворение матрицы сплава с полным переходом в раствор металлической фазы и выпадением в осадок карбидов, .(нитридов, карбонитридов и т. д.). - . .. . .The use of selected ratios of acids in the mixture provides selective dissolution of the alloy matrix with a complete transition to the solution of the metal phase and precipitation of carbides,. (Nitrides, carbonitrides, etc.). -. .. .
Предложенный температурный режим растБОрени обеспечивает достаточную скорость процесса, не допуска в то же врем перехода в раствор карбидов. Метод пригоден дл фазового анализа сталей в обычном и малокерамическом исполнении, а порошков инструментальных сталей, полученных распылением .The proposed temperature control procedure ensures a sufficient speed of the process, while at the same time preventing the transition to the solution of carbides. The method is suitable for phase analysis of steels in conventional and low ceramic performance, and powders of tool steels obtained by spraying.
Пример. Исследуемый образец в виде стружки или порошка обрабатывают 250 млExample. The sample in the form of chips or powder is treated with 250 ml
смеси сол ной и фосфорной кислот с уд. в. 1,035 и 1,70 соответственно, вз тых в соотношении 1 : 25.mixtures of hydrochloric and phosphoric acids with beats. at. 1.035 and 1.70, respectively, taken at a ratio of 1: 25.
Раствор нагревают до 70°С, фильтруют через плотный фильтр и анализируют отдельноThe solution is heated to 70 ° C, filtered through a dense filter and analyzed separately
фильтрат и осадок известными методами.the filtrate and sediment known methods.
Предмет изобретени Subject invention
Способ фазового анализа инструментальных сталей, включающий растворение металлической фазы в смеси сол ной и фосфорной кислот и последующее определение металлов в растворе и карбидов в осадке, отличающийс тем, что, с целью повышени селективности отделени фаз, используют смесь сол ной и фосфорной кислот в соотношении от 25 : 1 до 50 : I и растворение провод т при 7П-85°С.A method of phase analysis of tool steels, including the dissolution of the metal phase in a mixture of hydrochloric and phosphoric acids and the subsequent determination of metals in solution and carbides in the sediment, characterized in that, in order to increase the selectivity of separation of the phases, a mixture of hydrochloric and phosphoric acids is used in a ratio from 25: 1 to 50: I and dissolution is carried out at 7P-85 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1766763A SU408213A1 (en) | 1972-03-31 | 1972-03-31 | METHOD OF PHASE ANALYSIS OF TOOL STEELS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1766763A SU408213A1 (en) | 1972-03-31 | 1972-03-31 | METHOD OF PHASE ANALYSIS OF TOOL STEELS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU408213A1 true SU408213A1 (en) | 1973-12-10 |
Family
ID=20508799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1766763A SU408213A1 (en) | 1972-03-31 | 1972-03-31 | METHOD OF PHASE ANALYSIS OF TOOL STEELS |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU408213A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471897A (en) * | 2013-09-09 | 2013-12-25 | 河北科技大学 | Color metallography coloring method of aluminum alloy |
-
1972
- 1972-03-31 SU SU1766763A patent/SU408213A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471897A (en) * | 2013-09-09 | 2013-12-25 | 河北科技大学 | Color metallography coloring method of aluminum alloy |
| CN103471897B (en) * | 2013-09-09 | 2015-06-17 | 河北科技大学 | Color metallography coloring method of aluminum alloy |
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