Synthesis of the lead-calcium HAP solid solutions

Synthesis of the lead-calcium HAP solid solutions A series of lead-calcium hydroxylapatite solid solution was synthesized by the precipitation method. Characterization by various means confirmed the forming of the continuous solid solution over a whole Pb/(Pb+Ca) mole fraction range. An obvious deviation of both a and c lattice parameters from Vegard’s rule was observed. The solids of X Pb = 0–0.51 were typically prism crystals with hexagonal pyramid as a termination (particle size 50–100 nm); those of X Pb = 0.61–0.69 were the typical hexagonal columnar crystals with pinacoid or hexagonal pyramid as termination, which elongated along c axis (particle size 200–600 nm); those of X Pb = 0.80–1.00 were the typical prism crystals with hexagonal pyramid as termination (particle size 2–20 μm). The phosphate peak area for the symmetric P-O stretching decreased with increasing Pb/(Pb + Ca) ratio and disappeared as the Pb/(Pb + Ca) ratio > 0.61, and two phosphate peaks of the P-O stretching were diminished with the increase in X Pb. These variations could be caused by a slight tendency of larger Pb2+ to prefer the M(II) sites and smaller Ca2+ to occupy the M(I) sites in the apatite structure. Russian Journal of Applied Chemistry Springer Journals

Synthesis of the lead-calcium HAP solid solutions

Loading next page...
Pleiades Publishing
Copyright © 2015 by Pleiades Publishing, Ltd.
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial