What is phosphide eutectic?

Despite a solubility of 1.1 %, phosphor is already formed in the austenite if the alloy contains as little as 0.1 % phosphor. In this case, the phosphorous eutectic only consists of iron phosphide and disintegrated austenite and is therefore referred to as pseudo-binary phosphorous eutectic.

What is eutectic cast iron?

A cast iron type with eutectic composition, i.e. with a degree of saturation of 1.0 or a carbon equivalent of 4.3 % is referred to as eutectic cast iron.

How GREY and white cast irons are formed?

A high cooling rate and a low carbon equivalent favours the formation of white cast iron whereas a low cooling rate or a high carbon equivalent promotes grey cast iron. During solidification, the major proportion of the carbon precipitates in the form of graphite or cementite.

Is Ledeburite a phase?

The eutectic mixture is 4.3% carbon. Its melting point is 1147°C. At 4.3% carbon the metal becomes 100% ledeburite. Ledeburite is a phase mixture, of austenite and cementite.

What is the eutectic pattern of ferrite-iron phosphide?

The eutectic phosphide is shown in high magnification in Fig. 3. This eutectic structure is shaped like the herringbone pattern, which is a characteristic of the binary eutectic of ferrite-iron phosphide [15], [16]. Fig. 3. Herringbone pattern of phosphide eutectic in 2.5%P gray cast iron. Matrix microstructure is pearlitic. Etchant: nital. 3.2.

What is the hardness of binary phosphide eutectic?

The average hardness of binary phosphide eutectic is 570 HV which, in comparison with hardness of normal pearlite (252 HB), raises the hardness of cast iron [9]. Phosphorus iron, having high wear resistance and an adequately high and stable friction coefficient, best satisfies friction requirements [10], [11].

What is the effect of phosphorus on cast iron?

The effect of phosphorus on ledeburite eutectic temperature is shown in Fig. 5. Increasing phosphorus decreases the eutectic temperature. This may be attributed to an increase in low-temperature phosphide eutectic, which decreases eutectic temperature of cast iron. This is in good agreement with other authors’ results (1).

What is the molecular weight of Fe3P phosphide?

Iron phosphide, Fe3P PubChem CID 71310637 Synonyms Iron phosphide, Fe3P MFCD00799762 Iron p Molecular Weight 201.53 g/mol Component Compounds CID 23925 (Fe) CID 24404 (Phosphine) Date s Modify 2021-05-01 Create 2013-05-17

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