Effect of Strontium Pretreatment on Zinc Phosphate Coating Deposition on Magnesium Alloy

2019 ◽  
Vol 17 ◽  
pp. 694-699
Author(s):  
N.N. Ismail ◽  
H. Zuhailawati ◽  
K. Abdalla
Keyword(s):  
Magnesium Alloy ◽  
Zinc Phosphate ◽  
Phosphate Coating ◽  
Coating Deposition

Electroless Ni–P deposition plus zinc phosphate coating on AZ91D magnesium alloy

2006 ◽  
Vol 200 (20-21) ◽  
pp. 5956-5962 ◽  
Author(s):  
J.S. Lian ◽  
G.Y. Li ◽  
L.Y. Niu ◽  
C.D. Gu ◽  
Z.H. Jiang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Zinc Phosphate ◽  
Phosphate Coating ◽  
Az91d Magnesium Alloy ◽  
Electroless Ni

A study and application of zinc phosphate coating on AZ91D magnesium alloy

2006 ◽  
Vol 200 (9) ◽  
pp. 3021-3026 ◽  
Author(s):  
L.Y. Niu ◽  
Z.H. Jiang ◽  
G.Y. Li ◽  
C.D. Gu ◽  
J.S. Lian
Keyword(s):  
Magnesium Alloy ◽  
Zinc Phosphate ◽  
Phosphate Coating ◽  
Az91d Magnesium Alloy

Influence of pH of Phosphating Bath on the Zinc Phosphate Coating on AZ91D Magnesium Alloy

2006 ◽  
Vol 8 (1-2) ◽  
pp. 123-127 ◽  
Author(s):  
G. Y. Li ◽  
J. S. Lian ◽  
L. Y. Niu ◽  
Z. H. Jiang
Keyword(s):  
Magnesium Alloy ◽  
Zinc Phosphate ◽  
Phosphate Coating ◽  
Az91d Magnesium Alloy ◽  
Influence Of Ph

Hydrothermal Growth of Nano-Hydroxyapatite Coating Formed on Fluorinated Magnesium Alloy and Its Corrosion Behaviour

2021 ◽  
Vol 13 (1) ◽  
pp. 10-19
Author(s):  
Chun-Yan Zhang ◽  
Hao-Lan Fang ◽  
Xin-Peng Liu ◽  
Fan-Cheng Meng ◽  
Zhong-Qing Tian ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Calcium Phosphate ◽  
Hydrothermal Treatment ◽  
Treatment Time ◽  
Electrochemical Impedance ◽  
Hydrothermal Growth ◽  
Crystal Phase ◽  
Calcium Phosphate Coating ◽  
Phosphate Coating ◽  
Ha Coating

In order to explore the hydrothermal growth mechanism of hydroxyapatite (HA) coating on fluorinated magnesium alloy, the changes of morphology, composition and crystal phase of the calcium phosphate coating during the hydrothermal treatment were studied. And the change of electrochemical impedance spectroscopy (EIS) of the coating specimen of different hydrothermal treatment time was discussed to further understanding the change of the coating structure. The results demonstrated that calcium phosphate could rapidly nucleate on fluorinated AZ31 magnesium alloy. The crystal phase of calcium phosphate coating was mainly octacalcium phosphate (OCP) at the early stage of hydrothermal treatment. Then the content of OCP decreased and the content of HA increased with hydrothermal time. The coating consisted of only HA after hydrothermal treatment for about 4h. The HA coating composed of rod-like crystals exhibited an obvious double layer structure. The rod-like crystals of inner layer arranged into dense bundles and the rod-like crystals of outer layer arranged into loose chrysanthemum-like clusters. Fluoride conversion layer acted as an intermediate transition layer to connect magnesium alloy and HA coating into a whole. The results of immersion test in simulated body fluid demonstrated that HA crystals dissolved slowly. No peeling occurred of HA coating during the 12 days' immersion. Pitting corrosion was still the mainly corrosion mode of magnesium alloy substrate due to the electrolyte infiltration during the immersion.

Treatment of rinse water from zinc phosphate coating by batch and continuous electrocoagulation processes

2010 ◽  
Vol 173 (1-3) ◽  
pp. 326-334 ◽  
Author(s):  
M. Kobya ◽  
E. Demirbas ◽  
A. Dedeli ◽  
M.T. Sensoy
Keyword(s):  
Zinc Phosphate ◽  
Phosphate Coating ◽  
Rinse Water

Scorch Control of Carboxylic Elastomers

1973 ◽  
Vol 46 (1) ◽  
pp. 78-95 ◽  
Author(s):  
V. L. Hallenbeck
Keyword(s):  
Zinc Oxide ◽  
Physical Properties ◽  
Shelf Life ◽  
Zinc Sulfide ◽  
Zinc Phosphate ◽  
Carboxyl Groups ◽  
Carboxyl Group ◽  
Phosphate Coating ◽  
Ionic Bond ◽  
Cure Temperature

Abstract Carboxylic elastomers can be cured by standard compounding recipes utilizing sulfur and zinc oxide. The zinc oxide, besides aiding the sulfur cure, also gives a secondary cure through an ionic bond with the carboxyl groups. However, because of the affinity of the zinc oxide for the carboxyl group, the stocks tend to have an excessive scorch and a short shelf life. To prevent this excessive scorch the zinc oxide must be isolated from the carboxyl group until the desired cure temperature is reached. Three materials may be used to isolate the zinc oxide : 1) zinc sulfide coated zinc oxide, 2) zinc phosphate coated zinc oxide and 3) metallic alkoxide combined with the zinc oxide. The use of any of these gives scorch control without affecting final physical properties. The amount of zinc sulfide coating, zinc phosphate coating, and metallic alkoxide varies with the type of carboxylic elastomer.

scholarly journals Fundametal Characteristics of Zinc Phosphate Coating

1980 ◽  
Vol 66 (7) ◽  
pp. 924-934 ◽  
Author(s):  
Ryuji KOJIMA ◽  
Hiroshi OKITA ◽  
Yasunobu MATSUSHIMA
Keyword(s):  
Zinc Phosphate ◽  
Phosphate Coating
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